/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/pthread-wmm/safe036_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 13:46:39,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 13:46:39,701 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 13:46:39,737 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 13:46:39,738 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 13:46:39,740 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 13:46:39,742 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 13:46:39,744 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 13:46:39,747 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 13:46:39,748 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 13:46:39,750 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 13:46:39,752 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 13:46:39,754 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 13:46:39,757 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 13:46:39,759 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 13:46:39,762 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 13:46:39,764 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 13:46:39,768 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 13:46:39,777 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 13:46:39,780 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 13:46:39,787 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 13:46:39,788 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 13:46:39,790 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 13:46:39,794 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 13:46:39,802 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 13:46:39,802 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 13:46:39,803 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 13:46:39,806 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 13:46:39,811 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 13:46:39,815 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 13:46:39,815 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 13:46:39,816 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 13:46:39,818 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 13:46:39,820 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 13:46:39,821 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 13:46:39,821 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 13:46:39,838 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 13:46:39,842 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 13:46:39,843 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 13:46:39,846 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 13:46:39,848 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 13:46:39,849 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 13:46:39,899 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 13:46:39,899 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 13:46:39,905 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 13:46:39,906 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 13:46:39,906 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 13:46:39,906 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 13:46:39,906 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 13:46:39,906 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 13:46:39,907 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 13:46:39,907 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 13:46:39,908 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 13:46:39,909 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 13:46:39,909 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 13:46:39,909 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 13:46:39,909 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 13:46:39,909 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 13:46:39,910 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 13:46:39,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 13:46:39,910 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 13:46:39,910 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 13:46:39,910 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 13:46:39,911 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 13:46:39,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 13:46:39,911 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 13:46:39,912 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 13:46:39,912 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 13:46:40,331 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 13:46:40,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 13:46:40,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 13:46:40,367 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 13:46:40,371 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 13:46:40,373 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe036_pso.oepc.i [2020-12-23 13:46:40,454 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/340d6874f/e5e5d6503465468893567f80ce5f26d0/FLAG81c165050 [2020-12-23 13:46:41,216 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 13:46:41,217 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe036_pso.oepc.i [2020-12-23 13:46:41,238 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/340d6874f/e5e5d6503465468893567f80ce5f26d0/FLAG81c165050 [2020-12-23 13:46:41,515 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/340d6874f/e5e5d6503465468893567f80ce5f26d0 [2020-12-23 13:46:41,520 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 13:46:41,524 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 13:46:41,528 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 13:46:41,528 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 13:46:41,532 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 13:46:41,534 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:46:41" (1/1) ... [2020-12-23 13:46:41,536 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20e6366c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:46:41, skipping insertion in model container [2020-12-23 13:46:41,536 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:46:41" (1/1) ... [2020-12-23 13:46:41,546 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 13:46:41,623 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 13:46:41,886 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe036_pso.oepc.i[950,963] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p1_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2020-12-23 13:46:42,129 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 13:46:42,142 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 13:46:42,157 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe036_pso.oepc.i[950,963] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p1_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2020-12-23 13:46:42,189 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 13:46:42,294 INFO L208 MainTranslator]: Completed translation [2020-12-23 13:46:42,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:46:42 WrapperNode [2020-12-23 13:46:42,295 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 13:46:42,297 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 13:46:42,297 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 13:46:42,298 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 13:46:42,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:46:42" (1/1) ... [2020-12-23 13:46:42,343 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:46:42" (1/1) ... [2020-12-23 13:46:42,375 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 13:46:42,379 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 13:46:42,380 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 13:46:42,381 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 13:46:42,391 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:46:42" (1/1) ... [2020-12-23 13:46:42,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:46:42" (1/1) ... [2020-12-23 13:46:42,406 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:46:42" (1/1) ... [2020-12-23 13:46:42,409 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:46:42" (1/1) ... [2020-12-23 13:46:42,423 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:46:42" (1/1) ... [2020-12-23 13:46:42,429 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:46:42" (1/1) ... [2020-12-23 13:46:42,435 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:46:42" (1/1) ... [2020-12-23 13:46:42,440 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 13:46:42,444 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 13:46:42,444 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 13:46:42,445 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 13:46:42,446 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:46:42" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 13:46:42,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 13:46:42,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-23 13:46:42,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 13:46:42,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 13:46:42,569 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-23 13:46:42,570 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-23 13:46:42,571 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-23 13:46:42,571 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-23 13:46:42,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 13:46:42,572 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-23 13:46:42,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 13:46:42,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 13:46:42,575 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-23 13:46:42,968 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 13:46:42,969 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-23 13:46:42,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:46:42 BoogieIcfgContainer [2020-12-23 13:46:42,971 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 13:46:42,973 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 13:46:42,973 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 13:46:42,977 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 13:46:42,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 01:46:41" (1/3) ... [2020-12-23 13:46:42,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@263ce2ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:46:42, skipping insertion in model container [2020-12-23 13:46:42,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:46:42" (2/3) ... [2020-12-23 13:46:42,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@263ce2ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:46:42, skipping insertion in model container [2020-12-23 13:46:42,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:46:42" (3/3) ... [2020-12-23 13:46:42,981 INFO L111 eAbstractionObserver]: Analyzing ICFG safe036_pso.oepc.i [2020-12-23 13:46:42,988 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-23 13:46:42,988 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 13:46:42,993 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 13:46:42,994 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-23 13:46:43,028 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:43,029 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:43,029 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:43,029 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:43,029 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:43,030 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:43,030 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:43,030 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:43,030 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:43,031 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:43,031 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:43,032 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:43,034 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:43,034 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:43,034 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:43,034 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:43,035 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:43,035 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:43,035 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:43,036 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:43,037 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:43,037 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:43,038 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:43,038 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:43,041 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:43,041 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:43,042 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:43,042 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:43,049 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:43,050 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:43,050 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:43,050 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:43,053 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-23 13:46:43,071 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-23 13:46:43,094 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 13:46:43,095 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 13:46:43,095 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 13:46:43,095 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 13:46:43,095 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 13:46:43,095 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 13:46:43,096 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 13:46:43,096 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 13:46:43,110 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-23 13:46:43,113 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 61 transitions, 132 flow [2020-12-23 13:46:43,117 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 61 transitions, 132 flow [2020-12-23 13:46:43,119 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 61 transitions, 132 flow [2020-12-23 13:46:43,167 INFO L129 PetriNetUnfolder]: 2/59 cut-off events. [2020-12-23 13:46:43,167 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-23 13:46:43,171 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 59 events. 2/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 37 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2020-12-23 13:46:43,174 INFO L116 LiptonReduction]: Number of co-enabled transitions 696 [2020-12-23 13:46:45,915 WARN L197 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-23 13:46:46,257 WARN L197 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-23 13:46:46,372 INFO L131 LiptonReduction]: Checked pairs total: 1354 [2020-12-23 13:46:46,373 INFO L133 LiptonReduction]: Total number of compositions: 55 [2020-12-23 13:46:46,379 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 23 places, 17 transitions, 44 flow [2020-12-23 13:46:46,392 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 90 states. [2020-12-23 13:46:46,394 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2020-12-23 13:46:46,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-23 13:46:46,401 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:46:46,401 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-23 13:46:46,402 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:46:46,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:46:46,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1865783441, now seen corresponding path program 1 times [2020-12-23 13:46:46,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:46:46,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47818548] [2020-12-23 13:46:46,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:46:46,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:46:46,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:46:46,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47818548] [2020-12-23 13:46:46,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:46:46,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:46:46,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311766532] [2020-12-23 13:46:46,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 13:46:46,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:46:46,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 13:46:46,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 13:46:46,631 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 2 states. [2020-12-23 13:46:46,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:46:46,653 INFO L93 Difference]: Finished difference Result 90 states and 200 transitions. [2020-12-23 13:46:46,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 13:46:46,654 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-12-23 13:46:46,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:46:46,666 INFO L225 Difference]: With dead ends: 90 [2020-12-23 13:46:46,666 INFO L226 Difference]: Without dead ends: 74 [2020-12-23 13:46:46,668 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 13:46:46,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-12-23 13:46:46,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-12-23 13:46:46,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-23 13:46:46,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 160 transitions. [2020-12-23 13:46:46,718 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 160 transitions. Word has length 6 [2020-12-23 13:46:46,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:46:46,718 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 160 transitions. [2020-12-23 13:46:46,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 13:46:46,719 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 160 transitions. [2020-12-23 13:46:46,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 13:46:46,719 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:46:46,719 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:46:46,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 13:46:46,720 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:46:46,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:46:46,721 INFO L82 PathProgramCache]: Analyzing trace with hash -2004756257, now seen corresponding path program 1 times [2020-12-23 13:46:46,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:46:46,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245656154] [2020-12-23 13:46:46,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:46:46,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:46:46,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:46:46,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245656154] [2020-12-23 13:46:46,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:46:46,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:46:46,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330692388] [2020-12-23 13:46:46,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:46:46,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:46:46,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:46:46,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:46:46,862 INFO L87 Difference]: Start difference. First operand 74 states and 160 transitions. Second operand 4 states. [2020-12-23 13:46:46,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:46:46,897 INFO L93 Difference]: Finished difference Result 63 states and 112 transitions. [2020-12-23 13:46:46,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 13:46:46,897 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-23 13:46:46,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:46:46,899 INFO L225 Difference]: With dead ends: 63 [2020-12-23 13:46:46,899 INFO L226 Difference]: Without dead ends: 47 [2020-12-23 13:46:46,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:46:46,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-23 13:46:46,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-12-23 13:46:46,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-23 13:46:46,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 79 transitions. [2020-12-23 13:46:46,907 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 79 transitions. Word has length 7 [2020-12-23 13:46:46,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:46:46,907 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 79 transitions. [2020-12-23 13:46:46,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:46:46,907 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 79 transitions. [2020-12-23 13:46:46,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 13:46:46,908 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:46:46,908 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:46:46,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 13:46:46,909 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:46:46,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:46:46,910 INFO L82 PathProgramCache]: Analyzing trace with hash 531180577, now seen corresponding path program 1 times [2020-12-23 13:46:46,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:46:46,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616786383] [2020-12-23 13:46:46,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:46:46,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:46:46,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:46:46,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616786383] [2020-12-23 13:46:47,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:46:47,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:46:47,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493247118] [2020-12-23 13:46:47,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:46:47,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:46:47,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:46:47,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:46:47,002 INFO L87 Difference]: Start difference. First operand 47 states and 79 transitions. Second operand 5 states. [2020-12-23 13:46:47,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:46:47,046 INFO L93 Difference]: Finished difference Result 36 states and 55 transitions. [2020-12-23 13:46:47,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:46:47,047 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-23 13:46:47,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:46:47,048 INFO L225 Difference]: With dead ends: 36 [2020-12-23 13:46:47,048 INFO L226 Difference]: Without dead ends: 29 [2020-12-23 13:46:47,048 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:46:47,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-23 13:46:47,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-12-23 13:46:47,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-23 13:46:47,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 43 transitions. [2020-12-23 13:46:47,054 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 43 transitions. Word has length 10 [2020-12-23 13:46:47,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:46:47,054 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 43 transitions. [2020-12-23 13:46:47,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:46:47,055 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 43 transitions. [2020-12-23 13:46:47,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 13:46:47,056 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:46:47,056 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:46:47,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 13:46:47,057 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:46:47,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:46:47,059 INFO L82 PathProgramCache]: Analyzing trace with hash 2005536794, now seen corresponding path program 1 times [2020-12-23 13:46:47,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:46:47,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549503812] [2020-12-23 13:46:47,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:46:47,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:46:47,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:46:47,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549503812] [2020-12-23 13:46:47,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:46:47,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:46:47,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485456064] [2020-12-23 13:46:47,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:46:47,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:46:47,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:46:47,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:46:47,190 INFO L87 Difference]: Start difference. First operand 29 states and 43 transitions. Second operand 5 states. [2020-12-23 13:46:47,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:46:47,229 INFO L93 Difference]: Finished difference Result 37 states and 52 transitions. [2020-12-23 13:46:47,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:46:47,230 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-23 13:46:47,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:46:47,230 INFO L225 Difference]: With dead ends: 37 [2020-12-23 13:46:47,230 INFO L226 Difference]: Without dead ends: 17 [2020-12-23 13:46:47,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:46:47,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-12-23 13:46:47,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-12-23 13:46:47,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-12-23 13:46:47,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2020-12-23 13:46:47,234 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 13 [2020-12-23 13:46:47,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:46:47,234 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2020-12-23 13:46:47,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:46:47,234 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2020-12-23 13:46:47,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 13:46:47,235 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:46:47,235 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:46:47,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 13:46:47,235 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:46:47,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:46:47,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1560668438, now seen corresponding path program 2 times [2020-12-23 13:46:47,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:46:47,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001685710] [2020-12-23 13:46:47,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:46:47,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:46:47,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:46:47,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001685710] [2020-12-23 13:46:47,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:46:47,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:46:47,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549619292] [2020-12-23 13:46:47,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:46:47,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:46:47,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:46:47,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:46:47,321 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 5 states. [2020-12-23 13:46:47,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:46:47,347 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2020-12-23 13:46:47,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:46:47,348 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-23 13:46:47,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:46:47,348 INFO L225 Difference]: With dead ends: 16 [2020-12-23 13:46:47,348 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 13:46:47,349 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:46:47,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 13:46:47,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 13:46:47,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 13:46:47,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 13:46:47,350 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-12-23 13:46:47,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:46:47,350 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 13:46:47,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:46:47,350 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 13:46:47,351 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 13:46:47,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 13:46:47,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 01:46:47 BasicIcfg [2020-12-23 13:46:47,355 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 13:46:47,356 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 13:46:47,356 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 13:46:47,356 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 13:46:47,357 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:46:42" (3/4) ... [2020-12-23 13:46:47,360 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 13:46:47,368 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-23 13:46:47,368 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-23 13:46:47,374 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-12-23 13:46:47,374 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-23 13:46:47,374 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 13:46:47,375 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 13:46:47,418 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/safe036_pso.oepc.i-witness.graphml [2020-12-23 13:46:47,418 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 13:46:47,420 INFO L168 Benchmark]: Toolchain (without parser) took 5895.71 ms. Allocated memory was 159.4 MB in the beginning and 217.1 MB in the end (delta: 57.7 MB). Free memory was 132.0 MB in the beginning and 109.0 MB in the end (delta: 23.1 MB). Peak memory consumption was 82.2 MB. Max. memory is 8.0 GB. [2020-12-23 13:46:47,420 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 159.4 MB. Free memory is still 133.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 13:46:47,421 INFO L168 Benchmark]: CACSL2BoogieTranslator took 768.65 ms. Allocated memory is still 159.4 MB. Free memory was 132.0 MB in the beginning and 101.6 MB in the end (delta: 30.4 MB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 GB. [2020-12-23 13:46:47,422 INFO L168 Benchmark]: Boogie Procedure Inliner took 80.01 ms. Allocated memory is still 159.4 MB. Free memory was 101.6 MB in the beginning and 99.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:46:47,422 INFO L168 Benchmark]: Boogie Preprocessor took 60.97 ms. Allocated memory is still 159.4 MB. Free memory was 99.9 MB in the beginning and 98.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 13:46:47,423 INFO L168 Benchmark]: RCFGBuilder took 527.25 ms. Allocated memory is still 159.4 MB. Free memory was 98.5 MB in the beginning and 78.4 MB in the end (delta: 20.1 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2020-12-23 13:46:47,424 INFO L168 Benchmark]: TraceAbstraction took 4381.97 ms. Allocated memory was 159.4 MB in the beginning and 217.1 MB in the end (delta: 57.7 MB). Free memory was 77.9 MB in the beginning and 111.6 MB in the end (delta: -33.6 MB). Peak memory consumption was 24.5 MB. Max. memory is 8.0 GB. [2020-12-23 13:46:47,424 INFO L168 Benchmark]: Witness Printer took 62.53 ms. Allocated memory is still 217.1 MB. Free memory was 111.6 MB in the beginning and 109.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:46:47,428 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 159.4 MB. Free memory is still 133.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 768.65 ms. Allocated memory is still 159.4 MB. Free memory was 132.0 MB in the beginning and 101.6 MB in the end (delta: 30.4 MB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 80.01 ms. Allocated memory is still 159.4 MB. Free memory was 101.6 MB in the beginning and 99.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 60.97 ms. Allocated memory is still 159.4 MB. Free memory was 99.9 MB in the beginning and 98.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 527.25 ms. Allocated memory is still 159.4 MB. Free memory was 98.5 MB in the beginning and 78.4 MB in the end (delta: 20.1 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4381.97 ms. Allocated memory was 159.4 MB in the beginning and 217.1 MB in the end (delta: 57.7 MB). Free memory was 77.9 MB in the beginning and 111.6 MB in the end (delta: -33.6 MB). Peak memory consumption was 24.5 MB. Max. memory is 8.0 GB. * Witness Printer took 62.53 ms. Allocated memory is still 217.1 MB. Free memory was 111.6 MB in the beginning and 109.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 465 VarBasedMoverChecksPositive, 22 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 20 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 47 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.2s, 66 PlacesBefore, 23 PlacesAfterwards, 61 TransitionsBefore, 17 TransitionsAfterwards, 696 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 55 TotalNumberOfCompositions, 1354 MoverChecksTotal - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.2s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, HoareTripleCheckerStatistics: 63 SDtfs, 62 SDslu, 83 SDs, 0 SdLazy, 34 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 1108 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...