/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/safe000_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 13:37:12,590 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 13:37:12,593 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 13:37:12,630 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 13:37:12,630 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 13:37:12,632 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 13:37:12,634 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 13:37:12,637 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 13:37:12,639 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 13:37:12,640 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 13:37:12,642 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 13:37:12,643 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 13:37:12,644 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 13:37:12,645 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 13:37:12,647 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 13:37:12,648 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 13:37:12,649 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 13:37:12,650 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 13:37:12,652 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 13:37:12,655 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 13:37:12,657 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 13:37:12,661 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 13:37:12,663 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 13:37:12,664 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 13:37:12,678 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 13:37:12,678 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 13:37:12,679 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 13:37:12,680 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 13:37:12,680 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 13:37:12,682 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 13:37:12,682 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 13:37:12,683 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 13:37:12,684 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 13:37:12,685 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 13:37:12,686 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 13:37:12,686 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 13:37:12,687 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 13:37:12,687 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 13:37:12,688 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 13:37:12,689 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 13:37:12,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 13:37:12,691 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 13:37:12,720 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 13:37:12,720 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 13:37:12,722 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 13:37:12,722 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 13:37:12,723 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 13:37:12,723 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 13:37:12,723 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 13:37:12,724 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 13:37:12,724 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 13:37:12,724 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 13:37:12,724 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 13:37:12,725 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 13:37:12,725 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 13:37:12,725 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 13:37:12,726 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 13:37:12,726 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 13:37:12,726 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 13:37:12,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 13:37:12,727 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 13:37:12,727 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 13:37:12,727 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 13:37:12,728 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 13:37:12,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 13:37:12,728 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 13:37:12,729 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 13:37:12,729 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 13:37:13,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 13:37:13,203 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 13:37:13,207 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 13:37:13,209 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 13:37:13,210 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 13:37:13,211 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe000_tso.oepc.i [2020-12-23 13:37:13,303 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/84452dd35/0577329bbc144eba8675c4aa249fb201/FLAG5ba399690 [2020-12-23 13:37:14,046 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 13:37:14,047 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe000_tso.oepc.i [2020-12-23 13:37:14,064 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/84452dd35/0577329bbc144eba8675c4aa249fb201/FLAG5ba399690 [2020-12-23 13:37:14,262 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/84452dd35/0577329bbc144eba8675c4aa249fb201 [2020-12-23 13:37:14,265 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 13:37:14,268 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 13:37:14,271 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 13:37:14,271 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 13:37:14,275 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 13:37:14,277 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:37:14" (1/1) ... [2020-12-23 13:37:14,280 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@401e87e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:37:14, skipping insertion in model container [2020-12-23 13:37:14,280 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:37:14" (1/1) ... [2020-12-23 13:37:14,289 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 13:37:14,366 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 13:37:14,654 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/safe000_tso.oepc.i[950,963] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p1_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~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$tmp_guard1~0,GLOBAL] [2020-12-23 13:37:14,825 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 13:37:14,835 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 13:37:14,851 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe000_tso.oepc.i[950,963] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p1_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2020-12-23 13:37:14,893 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 13:37:15,057 INFO L208 MainTranslator]: Completed translation [2020-12-23 13:37:15,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:37:15 WrapperNode [2020-12-23 13:37:15,058 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 13:37:15,059 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 13:37:15,060 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 13:37:15,060 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 13:37:15,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:37:15" (1/1) ... [2020-12-23 13:37:15,087 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:37:15" (1/1) ... [2020-12-23 13:37:15,114 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 13:37:15,118 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 13:37:15,119 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 13:37:15,120 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 13:37:15,130 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:37:15" (1/1) ... [2020-12-23 13:37:15,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:37:15" (1/1) ... [2020-12-23 13:37:15,150 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:37:15" (1/1) ... [2020-12-23 13:37:15,151 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:37:15" (1/1) ... [2020-12-23 13:37:15,163 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:37:15" (1/1) ... [2020-12-23 13:37:15,175 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:37:15" (1/1) ... [2020-12-23 13:37:15,181 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:37:15" (1/1) ... [2020-12-23 13:37:15,186 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 13:37:15,187 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 13:37:15,187 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 13:37:15,187 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 13:37:15,191 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:37:15" (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 13:37:15,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 13:37:15,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-23 13:37:15,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 13:37:15,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 13:37:15,303 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-23 13:37:15,304 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-23 13:37:15,304 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-23 13:37:15,305 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-23 13:37:15,305 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-23 13:37:15,306 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-23 13:37:15,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 13:37:15,307 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-23 13:37:15,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 13:37:15,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 13:37:15,310 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 13:37:15,785 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 13:37:15,786 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-23 13:37:15,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:37:15 BoogieIcfgContainer [2020-12-23 13:37:15,789 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 13:37:15,790 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 13:37:15,791 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 13:37:15,794 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 13:37:15,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 01:37:14" (1/3) ... [2020-12-23 13:37:15,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7826a3a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:37:15, skipping insertion in model container [2020-12-23 13:37:15,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:37:15" (2/3) ... [2020-12-23 13:37:15,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7826a3a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:37:15, skipping insertion in model container [2020-12-23 13:37:15,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:37:15" (3/3) ... [2020-12-23 13:37:15,799 INFO L111 eAbstractionObserver]: Analyzing ICFG safe000_tso.oepc.i [2020-12-23 13:37:15,807 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-23 13:37:15,807 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 13:37:15,813 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 13:37:15,814 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-23 13:37:15,847 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,848 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,848 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,848 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,848 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,849 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,849 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,849 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,850 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,850 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,850 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,850 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,851 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,851 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,851 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,851 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,852 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,852 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,852 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,852 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,853 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,853 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,853 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,853 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,854 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,854 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,854 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,854 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,855 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,855 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,855 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,855 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,856 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,856 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,856 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,856 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,859 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,859 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,859 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,860 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,865 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,865 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,866 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,866 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,868 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,869 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,869 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,869 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,871 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-23 13:37:15,895 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-23 13:37:15,923 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 13:37:15,924 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 13:37:15,924 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 13:37:15,924 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 13:37:15,924 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 13:37:15,924 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 13:37:15,924 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 13:37:15,925 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 13:37:15,941 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-23 13:37:15,944 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 75 transitions, 165 flow [2020-12-23 13:37:15,949 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 75 transitions, 165 flow [2020-12-23 13:37:15,951 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2020-12-23 13:37:16,019 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2020-12-23 13:37:16,021 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-23 13:37:16,028 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2020-12-23 13:37:16,033 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2020-12-23 13:37:19,114 WARN L197 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-12-23 13:37:19,221 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-12-23 13:37:19,462 WARN L197 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-12-23 13:37:19,564 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-12-23 13:37:19,570 INFO L131 LiptonReduction]: Checked pairs total: 2653 [2020-12-23 13:37:19,570 INFO L133 LiptonReduction]: Total number of compositions: 59 [2020-12-23 13:37:19,577 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-12-23 13:37:19,609 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-12-23 13:37:19,611 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-12-23 13:37:19,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 13:37:19,620 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:37:19,621 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:37:19,622 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:37:19,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:37:19,636 INFO L82 PathProgramCache]: Analyzing trace with hash -991402129, now seen corresponding path program 1 times [2020-12-23 13:37:19,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:37:19,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120882345] [2020-12-23 13:37:19,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:37:19,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:37:19,840 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 13:37:19,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120882345] [2020-12-23 13:37:19,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:37:19,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:37:19,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831461416] [2020-12-23 13:37:19,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 13:37:19,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:37:19,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 13:37:19,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 13:37:19,867 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-12-23 13:37:19,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:37:19,905 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-12-23 13:37:19,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 13:37:19,907 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-23 13:37:19,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:37:19,926 INFO L225 Difference]: With dead ends: 362 [2020-12-23 13:37:19,926 INFO L226 Difference]: Without dead ends: 298 [2020-12-23 13:37:19,927 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 13:37:19,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-12-23 13:37:20,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-12-23 13:37:20,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-12-23 13:37:20,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-12-23 13:37:20,015 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-12-23 13:37:20,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:37:20,016 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-12-23 13:37:20,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 13:37:20,016 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-12-23 13:37:20,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 13:37:20,019 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:37:20,019 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:37:20,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 13:37:20,020 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:37:20,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:37:20,024 INFO L82 PathProgramCache]: Analyzing trace with hash -668714259, now seen corresponding path program 1 times [2020-12-23 13:37:20,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:37:20,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693449946] [2020-12-23 13:37:20,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:37:20,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:37:20,239 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 13:37:20,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693449946] [2020-12-23 13:37:20,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:37:20,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:37:20,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010996214] [2020-12-23 13:37:20,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:37:20,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:37:20,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:37:20,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:37:20,246 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-12-23 13:37:20,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:37:20,340 INFO L93 Difference]: Finished difference Result 545 states and 1490 transitions. [2020-12-23 13:37:20,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:37:20,341 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-23 13:37:20,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:37:20,349 INFO L225 Difference]: With dead ends: 545 [2020-12-23 13:37:20,349 INFO L226 Difference]: Without dead ends: 422 [2020-12-23 13:37:20,351 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 13:37:20,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2020-12-23 13:37:20,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 352. [2020-12-23 13:37:20,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2020-12-23 13:37:20,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 987 transitions. [2020-12-23 13:37:20,414 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 987 transitions. Word has length 9 [2020-12-23 13:37:20,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:37:20,414 INFO L481 AbstractCegarLoop]: Abstraction has 352 states and 987 transitions. [2020-12-23 13:37:20,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:37:20,415 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 987 transitions. [2020-12-23 13:37:20,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 13:37:20,417 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:37:20,417 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:37:20,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 13:37:20,419 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:37:20,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:37:20,425 INFO L82 PathProgramCache]: Analyzing trace with hash 39953638, now seen corresponding path program 1 times [2020-12-23 13:37:20,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:37:20,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903196053] [2020-12-23 13:37:20,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:37:20,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:37:20,619 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 13:37:20,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903196053] [2020-12-23 13:37:20,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:37:20,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:37:20,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690271072] [2020-12-23 13:37:20,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:37:20,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:37:20,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:37:20,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:37:20,627 INFO L87 Difference]: Start difference. First operand 352 states and 987 transitions. Second operand 5 states. [2020-12-23 13:37:20,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:37:20,727 INFO L93 Difference]: Finished difference Result 448 states and 1164 transitions. [2020-12-23 13:37:20,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 13:37:20,728 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-23 13:37:20,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:37:20,731 INFO L225 Difference]: With dead ends: 448 [2020-12-23 13:37:20,732 INFO L226 Difference]: Without dead ends: 360 [2020-12-23 13:37:20,732 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:37:20,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2020-12-23 13:37:20,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 302. [2020-12-23 13:37:20,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2020-12-23 13:37:20,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 814 transitions. [2020-12-23 13:37:20,746 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 814 transitions. Word has length 10 [2020-12-23 13:37:20,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:37:20,746 INFO L481 AbstractCegarLoop]: Abstraction has 302 states and 814 transitions. [2020-12-23 13:37:20,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:37:20,746 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 814 transitions. [2020-12-23 13:37:20,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 13:37:20,749 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:37:20,749 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:37:20,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 13:37:20,749 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:37:20,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:37:20,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1610224715, now seen corresponding path program 1 times [2020-12-23 13:37:20,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:37:20,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459586617] [2020-12-23 13:37:20,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:37:20,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:37:20,869 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 13:37:20,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459586617] [2020-12-23 13:37:20,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:37:20,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:37:20,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771250124] [2020-12-23 13:37:20,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:37:20,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:37:20,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:37:20,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:37:20,872 INFO L87 Difference]: Start difference. First operand 302 states and 814 transitions. Second operand 5 states. [2020-12-23 13:37:20,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:37:20,943 INFO L93 Difference]: Finished difference Result 382 states and 984 transitions. [2020-12-23 13:37:20,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 13:37:20,944 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-23 13:37:20,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:37:20,947 INFO L225 Difference]: With dead ends: 382 [2020-12-23 13:37:20,947 INFO L226 Difference]: Without dead ends: 338 [2020-12-23 13:37:20,947 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:37:20,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-12-23 13:37:20,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 286. [2020-12-23 13:37:20,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-12-23 13:37:20,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 762 transitions. [2020-12-23 13:37:20,960 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 762 transitions. Word has length 11 [2020-12-23 13:37:20,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:37:20,961 INFO L481 AbstractCegarLoop]: Abstraction has 286 states and 762 transitions. [2020-12-23 13:37:20,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:37:20,961 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 762 transitions. [2020-12-23 13:37:20,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 13:37:20,962 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:37:20,963 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:37:20,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 13:37:20,963 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:37:20,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:37:20,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1368326109, now seen corresponding path program 1 times [2020-12-23 13:37:20,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:37:20,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164157186] [2020-12-23 13:37:20,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:37:20,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:37:21,028 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 13:37:21,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164157186] [2020-12-23 13:37:21,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:37:21,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:37:21,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025915934] [2020-12-23 13:37:21,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:37:21,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:37:21,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:37:21,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:37:21,031 INFO L87 Difference]: Start difference. First operand 286 states and 762 transitions. Second operand 4 states. [2020-12-23 13:37:21,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:37:21,071 INFO L93 Difference]: Finished difference Result 354 states and 900 transitions. [2020-12-23 13:37:21,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:37:21,072 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-23 13:37:21,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:37:21,074 INFO L225 Difference]: With dead ends: 354 [2020-12-23 13:37:21,075 INFO L226 Difference]: Without dead ends: 286 [2020-12-23 13:37:21,075 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 13:37:21,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-12-23 13:37:21,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 218. [2020-12-23 13:37:21,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-12-23 13:37:21,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 572 transitions. [2020-12-23 13:37:21,084 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 572 transitions. Word has length 12 [2020-12-23 13:37:21,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:37:21,084 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 572 transitions. [2020-12-23 13:37:21,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:37:21,085 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 572 transitions. [2020-12-23 13:37:21,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 13:37:21,085 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:37:21,086 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:37:21,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 13:37:21,086 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:37:21,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:37:21,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1069072958, now seen corresponding path program 1 times [2020-12-23 13:37:21,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:37:21,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623801341] [2020-12-23 13:37:21,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:37:21,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:37:21,158 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 13:37:21,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623801341] [2020-12-23 13:37:21,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:37:21,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:37:21,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445830549] [2020-12-23 13:37:21,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:37:21,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:37:21,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:37:21,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:37:21,161 INFO L87 Difference]: Start difference. First operand 218 states and 572 transitions. Second operand 5 states. [2020-12-23 13:37:21,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:37:21,210 INFO L93 Difference]: Finished difference Result 278 states and 700 transitions. [2020-12-23 13:37:21,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 13:37:21,210 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-23 13:37:21,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:37:21,212 INFO L225 Difference]: With dead ends: 278 [2020-12-23 13:37:21,212 INFO L226 Difference]: Without dead ends: 134 [2020-12-23 13:37:21,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 13:37:21,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-12-23 13:37:21,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2020-12-23 13:37:21,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-12-23 13:37:21,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 312 transitions. [2020-12-23 13:37:21,218 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 312 transitions. Word has length 12 [2020-12-23 13:37:21,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:37:21,218 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 312 transitions. [2020-12-23 13:37:21,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:37:21,219 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 312 transitions. [2020-12-23 13:37:21,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 13:37:21,220 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:37:21,220 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:37:21,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 13:37:21,220 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:37:21,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:37:21,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1136607611, now seen corresponding path program 1 times [2020-12-23 13:37:21,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:37:21,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656615291] [2020-12-23 13:37:21,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:37:21,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:37:21,324 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 13:37:21,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656615291] [2020-12-23 13:37:21,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:37:21,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:37:21,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894678573] [2020-12-23 13:37:21,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 13:37:21,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:37:21,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 13:37:21,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-23 13:37:21,327 INFO L87 Difference]: Start difference. First operand 134 states and 312 transitions. Second operand 6 states. [2020-12-23 13:37:21,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:37:21,374 INFO L93 Difference]: Finished difference Result 166 states and 376 transitions. [2020-12-23 13:37:21,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 13:37:21,377 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-12-23 13:37:21,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:37:21,378 INFO L225 Difference]: With dead ends: 166 [2020-12-23 13:37:21,379 INFO L226 Difference]: Without dead ends: 58 [2020-12-23 13:37:21,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-23 13:37:21,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-12-23 13:37:21,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-12-23 13:37:21,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-12-23 13:37:21,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 116 transitions. [2020-12-23 13:37:21,383 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 116 transitions. Word has length 14 [2020-12-23 13:37:21,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:37:21,383 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 116 transitions. [2020-12-23 13:37:21,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 13:37:21,384 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 116 transitions. [2020-12-23 13:37:21,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 13:37:21,384 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:37:21,384 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:37:21,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 13:37:21,385 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:37:21,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:37:21,386 INFO L82 PathProgramCache]: Analyzing trace with hash -306555335, now seen corresponding path program 2 times [2020-12-23 13:37:21,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:37:21,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803423595] [2020-12-23 13:37:21,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:37:21,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:37:21,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:37:21,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803423595] [2020-12-23 13:37:21,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:37:21,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:37:21,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600802042] [2020-12-23 13:37:21,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:37:21,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:37:21,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:37:21,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:37:21,457 INFO L87 Difference]: Start difference. First operand 58 states and 116 transitions. Second operand 5 states. [2020-12-23 13:37:21,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:37:21,496 INFO L93 Difference]: Finished difference Result 46 states and 84 transitions. [2020-12-23 13:37:21,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:37:21,503 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-23 13:37:21,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:37:21,504 INFO L225 Difference]: With dead ends: 46 [2020-12-23 13:37:21,504 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 13:37:21,505 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:37:21,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 13:37:21,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 13:37:21,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 13:37:21,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 13:37:21,506 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-12-23 13:37:21,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:37:21,506 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 13:37:21,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:37:21,506 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 13:37:21,506 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 13:37:21,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 13:37:21,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 01:37:21 BasicIcfg [2020-12-23 13:37:21,511 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 13:37:21,511 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 13:37:21,511 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 13:37:21,512 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 13:37:21,512 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:37:15" (3/4) ... [2020-12-23 13:37:21,518 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 13:37:21,526 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-23 13:37:21,526 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-23 13:37:21,526 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-23 13:37:21,533 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-23 13:37:21,534 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-23 13:37:21,534 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 13:37:21,534 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 13:37:21,605 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/safe000_tso.oepc.i-witness.graphml [2020-12-23 13:37:21,609 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 13:37:21,611 INFO L168 Benchmark]: Toolchain (without parser) took 7343.22 ms. Allocated memory was 156.2 MB in the beginning and 238.0 MB in the end (delta: 81.8 MB). Free memory was 130.5 MB in the beginning and 189.3 MB in the end (delta: -58.8 MB). Peak memory consumption was 23.9 MB. Max. memory is 8.0 GB. [2020-12-23 13:37:21,612 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 156.2 MB. Free memory is still 130.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 13:37:21,612 INFO L168 Benchmark]: CACSL2BoogieTranslator took 787.60 ms. Allocated memory is still 156.2 MB. Free memory was 130.3 MB in the beginning and 130.8 MB in the end (delta: -491.9 kB). Peak memory consumption was 26.8 MB. Max. memory is 8.0 GB. [2020-12-23 13:37:21,613 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.59 ms. Allocated memory is still 156.2 MB. Free memory was 130.8 MB in the beginning and 128.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:37:21,613 INFO L168 Benchmark]: Boogie Preprocessor took 68.29 ms. Allocated memory is still 156.2 MB. Free memory was 128.7 MB in the beginning and 127.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 13:37:21,614 INFO L168 Benchmark]: RCFGBuilder took 601.71 ms. Allocated memory is still 156.2 MB. Free memory was 127.7 MB in the beginning and 105.7 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-12-23 13:37:21,615 INFO L168 Benchmark]: TraceAbstraction took 5720.42 ms. Allocated memory was 156.2 MB in the beginning and 238.0 MB in the end (delta: 81.8 MB). Free memory was 105.1 MB in the beginning and 191.9 MB in the end (delta: -86.8 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 13:37:21,615 INFO L168 Benchmark]: Witness Printer took 98.29 ms. Allocated memory is still 238.0 MB. Free memory was 191.9 MB in the beginning and 189.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:37:21,618 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 156.2 MB. Free memory is still 130.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 787.60 ms. Allocated memory is still 156.2 MB. Free memory was 130.3 MB in the beginning and 130.8 MB in the end (delta: -491.9 kB). Peak memory consumption was 26.8 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 56.59 ms. Allocated memory is still 156.2 MB. Free memory was 130.8 MB in the beginning and 128.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 68.29 ms. Allocated memory is still 156.2 MB. Free memory was 128.7 MB in the beginning and 127.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 601.71 ms. Allocated memory is still 156.2 MB. Free memory was 127.7 MB in the beginning and 105.7 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5720.42 ms. Allocated memory was 156.2 MB in the beginning and 238.0 MB in the end (delta: 81.8 MB). Free memory was 105.1 MB in the beginning and 191.9 MB in the end (delta: -86.8 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 98.29 ms. Allocated memory is still 238.0 MB. Free memory was 191.9 MB in the beginning and 189.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 743 VarBasedMoverChecksPositive, 37 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 31 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 65 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.6s, 83 PlacesBefore, 32 PlacesAfterwards, 75 TransitionsBefore, 23 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 59 TotalNumberOfCompositions, 2653 MoverChecksTotal - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.5s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.6s, HoareTripleCheckerStatistics: 191 SDtfs, 188 SDslu, 271 SDs, 0 SdLazy, 121 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 248 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 4849 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...