/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/concurrent/pthreads/forkMultipleTimes.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-05 23:03:08,045 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-05 23:03:08,047 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-05 23:03:08,070 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-05 23:03:08,070 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-05 23:03:08,072 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-05 23:03:08,073 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-05 23:03:08,074 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-05 23:03:08,076 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-05 23:03:08,077 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-05 23:03:08,078 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-05 23:03:08,082 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-05 23:03:08,082 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-05 23:03:08,083 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-05 23:03:08,084 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-05 23:03:08,087 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-05 23:03:08,088 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-05 23:03:08,089 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-05 23:03:08,093 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-05 23:03:08,094 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-05 23:03:08,096 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-05 23:03:08,097 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-05 23:03:08,098 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-05 23:03:08,098 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-05 23:03:08,101 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-05 23:03:08,103 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-05 23:03:08,104 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-05 23:03:08,105 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-05 23:03:08,105 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-05 23:03:08,106 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-05 23:03:08,106 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-05 23:03:08,107 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-05 23:03:08,107 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-05 23:03:08,108 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-05 23:03:08,108 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-05 23:03:08,109 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-05 23:03:08,110 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-05 23:03:08,131 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-05 23:03:08,132 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-05 23:03:08,133 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-05 23:03:08,133 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-05 23:03:08,133 INFO L138 SettingsManager]: * Use SBE=true [2020-10-05 23:03:08,133 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-05 23:03:08,133 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-05 23:03:08,134 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-05 23:03:08,134 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-05 23:03:08,134 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-05 23:03:08,134 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-05 23:03:08,134 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-05 23:03:08,134 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-05 23:03:08,135 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-05 23:03:08,135 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-05 23:03:08,135 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-05 23:03:08,135 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-05 23:03:08,135 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-05 23:03:08,136 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-05 23:03:08,136 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-05 23:03:08,136 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-05 23:03:08,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-05 23:03:08,136 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-05 23:03:08,137 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-05 23:03:08,137 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-05 23:03:08,137 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-05 23:03:08,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-05 23:03:08,137 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-05 23:03:08,137 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-05 23:03:08,138 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-05 23:03:08,443 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-05 23:03:08,458 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-05 23:03:08,462 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-05 23:03:08,464 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-05 23:03:08,464 INFO L275 PluginConnector]: CDTParser initialized [2020-10-05 23:03:08,465 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/forkMultipleTimes.c [2020-10-05 23:03:08,541 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d03d11f6b/ce414895e7fa4188ae23a408ba16e40a/FLAG89551769d [2020-10-05 23:03:09,002 INFO L306 CDTParser]: Found 1 translation units. [2020-10-05 23:03:09,002 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/forkMultipleTimes.c [2020-10-05 23:03:09,003 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2020-10-05 23:03:09,004 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2020-10-05 23:03:09,048 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d03d11f6b/ce414895e7fa4188ae23a408ba16e40a/FLAG89551769d [2020-10-05 23:03:09,382 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d03d11f6b/ce414895e7fa4188ae23a408ba16e40a [2020-10-05 23:03:09,393 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-05 23:03:09,395 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-05 23:03:09,396 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-05 23:03:09,396 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-05 23:03:09,399 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-05 23:03:09,400 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 11:03:09" (1/1) ... [2020-10-05 23:03:09,403 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13905142 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:03:09, skipping insertion in model container [2020-10-05 23:03:09,403 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 11:03:09" (1/1) ... [2020-10-05 23:03:09,411 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-05 23:03:09,430 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-05 23:03:09,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 23:03:09,644 INFO L203 MainTranslator]: Completed pre-run [2020-10-05 23:03:09,746 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 23:03:09,763 INFO L208 MainTranslator]: Completed translation [2020-10-05 23:03:09,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:03:09 WrapperNode [2020-10-05 23:03:09,764 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-05 23:03:09,765 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-05 23:03:09,765 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-05 23:03:09,765 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-05 23:03:09,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:03:09" (1/1) ... [2020-10-05 23:03:09,779 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:03:09" (1/1) ... [2020-10-05 23:03:09,796 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-05 23:03:09,797 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-05 23:03:09,797 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-05 23:03:09,797 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-05 23:03:09,804 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:03:09" (1/1) ... [2020-10-05 23:03:09,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:03:09" (1/1) ... [2020-10-05 23:03:09,806 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:03:09" (1/1) ... [2020-10-05 23:03:09,806 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:03:09" (1/1) ... [2020-10-05 23:03:09,811 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:03:09" (1/1) ... [2020-10-05 23:03:09,813 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:03:09" (1/1) ... [2020-10-05 23:03:09,814 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:03:09" (1/1) ... [2020-10-05 23:03:09,816 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-05 23:03:09,817 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-05 23:03:09,817 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-05 23:03:09,817 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-05 23:03:09,818 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:03:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-10-05 23:03:09,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-05 23:03:09,880 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-10-05 23:03:09,880 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-10-05 23:03:09,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-05 23:03:09,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-05 23:03:09,882 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-05 23:03:09,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-05 23:03:09,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-05 23:03:09,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-05 23:03:09,885 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-05 23:03:10,148 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-05 23:03:10,149 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-05 23:03:10,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 11:03:10 BoogieIcfgContainer [2020-10-05 23:03:10,152 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-05 23:03:10,153 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-05 23:03:10,153 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-05 23:03:10,156 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-05 23:03:10,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.10 11:03:09" (1/3) ... [2020-10-05 23:03:10,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71a9db42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 11:03:10, skipping insertion in model container [2020-10-05 23:03:10,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:03:09" (2/3) ... [2020-10-05 23:03:10,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71a9db42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 11:03:10, skipping insertion in model container [2020-10-05 23:03:10,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 11:03:10" (3/3) ... [2020-10-05 23:03:10,161 INFO L109 eAbstractionObserver]: Analyzing ICFG forkMultipleTimes.c [2020-10-05 23:03:10,182 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-05 23:03:10,182 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-05 23:03:10,191 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-05 23:03:10,193 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-05 23:03:10,232 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,232 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,232 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,232 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,233 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,233 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,233 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,233 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,234 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,234 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,234 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,234 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,235 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,235 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,235 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,236 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,236 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,236 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,236 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,237 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,237 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,237 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,237 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,237 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,238 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,238 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,238 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,239 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,239 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,239 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,239 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,239 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,240 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,240 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,240 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,240 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,241 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,241 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,241 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,242 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,242 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,242 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,242 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,243 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,243 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,247 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,248 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,248 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,248 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,248 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,249 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,249 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,256 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,257 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,257 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,257 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,257 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,258 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,258 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,269 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,269 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,270 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,270 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,270 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,270 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,270 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:03:10,312 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-05 23:03:10,329 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-05 23:03:10,330 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-05 23:03:10,330 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-05 23:03:10,330 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-05 23:03:10,330 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-05 23:03:10,331 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-05 23:03:10,331 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-05 23:03:10,331 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-05 23:03:10,348 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 77 transitions, 196 flow [2020-10-05 23:03:10,350 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 81 places, 77 transitions, 196 flow [2020-10-05 23:03:10,428 INFO L129 PetriNetUnfolder]: 5/85 cut-off events. [2020-10-05 23:03:10,429 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2020-10-05 23:03:10,439 INFO L80 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 85 events. 5/85 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 114 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 50. Up to 6 conditions per place. [2020-10-05 23:03:10,446 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 81 places, 77 transitions, 196 flow [2020-10-05 23:03:10,499 INFO L129 PetriNetUnfolder]: 5/85 cut-off events. [2020-10-05 23:03:10,500 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2020-10-05 23:03:10,500 INFO L80 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 85 events. 5/85 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 114 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 50. Up to 6 conditions per place. [2020-10-05 23:03:10,507 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1008 [2020-10-05 23:03:10,510 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-10-05 23:03:11,853 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2020-10-05 23:03:12,001 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1623 [2020-10-05 23:03:12,002 INFO L214 etLargeBlockEncoding]: Total number of compositions: 43 [2020-10-05 23:03:12,006 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 35 transitions, 112 flow [2020-10-05 23:03:12,038 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 354 states. [2020-10-05 23:03:12,041 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states. [2020-10-05 23:03:12,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-05 23:03:12,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:03:12,056 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:03:12,057 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-05 23:03:12,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:03:12,063 INFO L82 PathProgramCache]: Analyzing trace with hash -126150362, now seen corresponding path program 1 times [2020-10-05 23:03:12,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:03:12,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950465579] [2020-10-05 23:03:12,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:03:12,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:03:12,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:03:12,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950465579] [2020-10-05 23:03:12,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:03:12,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-05 23:03:12,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841427387] [2020-10-05 23:03:12,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-05 23:03:12,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:03:12,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-05 23:03:12,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-05 23:03:12,722 INFO L87 Difference]: Start difference. First operand 354 states. Second operand 12 states. [2020-10-05 23:03:13,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:03:13,882 INFO L93 Difference]: Finished difference Result 748 states and 1901 transitions. [2020-10-05 23:03:13,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-05 23:03:13,885 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 25 [2020-10-05 23:03:13,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:03:13,927 INFO L225 Difference]: With dead ends: 748 [2020-10-05 23:03:13,927 INFO L226 Difference]: Without dead ends: 740 [2020-10-05 23:03:13,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2020-10-05 23:03:13,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2020-10-05 23:03:14,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 487. [2020-10-05 23:03:14,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 487 states. [2020-10-05 23:03:14,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 1246 transitions. [2020-10-05 23:03:14,049 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 1246 transitions. Word has length 25 [2020-10-05 23:03:14,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:03:14,051 INFO L479 AbstractCegarLoop]: Abstraction has 487 states and 1246 transitions. [2020-10-05 23:03:14,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-05 23:03:14,051 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 1246 transitions. [2020-10-05 23:03:14,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-05 23:03:14,061 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:03:14,061 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:03:14,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-05 23:03:14,062 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-05 23:03:14,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:03:14,062 INFO L82 PathProgramCache]: Analyzing trace with hash -63589262, now seen corresponding path program 2 times [2020-10-05 23:03:14,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:03:14,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721123442] [2020-10-05 23:03:14,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:03:14,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:03:14,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:03:14,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721123442] [2020-10-05 23:03:14,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:03:14,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-05 23:03:14,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42918359] [2020-10-05 23:03:14,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-05 23:03:14,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:03:14,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-05 23:03:14,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-10-05 23:03:14,622 INFO L87 Difference]: Start difference. First operand 487 states and 1246 transitions. Second operand 16 states. [2020-10-05 23:03:17,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:03:17,526 INFO L93 Difference]: Finished difference Result 1252 states and 3200 transitions. [2020-10-05 23:03:17,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-05 23:03:17,527 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-05 23:03:17,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:03:17,542 INFO L225 Difference]: With dead ends: 1252 [2020-10-05 23:03:17,542 INFO L226 Difference]: Without dead ends: 1243 [2020-10-05 23:03:17,544 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=322, Invalid=1570, Unknown=0, NotChecked=0, Total=1892 [2020-10-05 23:03:17,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1243 states. [2020-10-05 23:03:17,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1243 to 560. [2020-10-05 23:03:17,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 560 states. [2020-10-05 23:03:17,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 1408 transitions. [2020-10-05 23:03:17,594 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 1408 transitions. Word has length 25 [2020-10-05 23:03:17,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:03:17,594 INFO L479 AbstractCegarLoop]: Abstraction has 560 states and 1408 transitions. [2020-10-05 23:03:17,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-05 23:03:17,595 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 1408 transitions. [2020-10-05 23:03:17,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-05 23:03:17,597 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:03:17,597 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:03:17,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-05 23:03:17,597 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-05 23:03:17,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:03:17,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1895995450, now seen corresponding path program 1 times [2020-10-05 23:03:17,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:03:17,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512691507] [2020-10-05 23:03:17,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:03:17,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:03:18,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:03:18,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512691507] [2020-10-05 23:03:18,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:03:18,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-05 23:03:18,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528805412] [2020-10-05 23:03:18,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:03:18,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:03:18,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:03:18,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:03:18,183 INFO L87 Difference]: Start difference. First operand 560 states and 1408 transitions. Second operand 13 states. [2020-10-05 23:03:19,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:03:19,040 INFO L93 Difference]: Finished difference Result 683 states and 1739 transitions. [2020-10-05 23:03:19,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 23:03:19,041 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 25 [2020-10-05 23:03:19,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:03:19,047 INFO L225 Difference]: With dead ends: 683 [2020-10-05 23:03:19,047 INFO L226 Difference]: Without dead ends: 675 [2020-10-05 23:03:19,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2020-10-05 23:03:19,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2020-10-05 23:03:19,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 639. [2020-10-05 23:03:19,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 639 states. [2020-10-05 23:03:19,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 1623 transitions. [2020-10-05 23:03:19,074 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 1623 transitions. Word has length 25 [2020-10-05 23:03:19,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:03:19,075 INFO L479 AbstractCegarLoop]: Abstraction has 639 states and 1623 transitions. [2020-10-05 23:03:19,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:03:19,076 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 1623 transitions. [2020-10-05 23:03:19,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-05 23:03:19,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:03:19,078 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:03:19,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-05 23:03:19,079 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-05 23:03:19,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:03:19,080 INFO L82 PathProgramCache]: Analyzing trace with hash 374980096, now seen corresponding path program 2 times [2020-10-05 23:03:19,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:03:19,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004561050] [2020-10-05 23:03:19,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:03:19,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:03:19,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:03:19,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004561050] [2020-10-05 23:03:19,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:03:19,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-05 23:03:19,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445605421] [2020-10-05 23:03:19,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 23:03:19,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:03:19,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 23:03:19,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:03:19,661 INFO L87 Difference]: Start difference. First operand 639 states and 1623 transitions. Second operand 17 states. [2020-10-05 23:03:23,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:03:23,073 INFO L93 Difference]: Finished difference Result 1378 states and 3442 transitions. [2020-10-05 23:03:23,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-05 23:03:23,079 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 25 [2020-10-05 23:03:23,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:03:23,088 INFO L225 Difference]: With dead ends: 1378 [2020-10-05 23:03:23,089 INFO L226 Difference]: Without dead ends: 1360 [2020-10-05 23:03:23,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=372, Invalid=1980, Unknown=0, NotChecked=0, Total=2352 [2020-10-05 23:03:23,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1360 states. [2020-10-05 23:03:23,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1360 to 727. [2020-10-05 23:03:23,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2020-10-05 23:03:23,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1860 transitions. [2020-10-05 23:03:23,124 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1860 transitions. Word has length 25 [2020-10-05 23:03:23,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:03:23,124 INFO L479 AbstractCegarLoop]: Abstraction has 727 states and 1860 transitions. [2020-10-05 23:03:23,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 23:03:23,124 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1860 transitions. [2020-10-05 23:03:23,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-05 23:03:23,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:03:23,127 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:03:23,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-05 23:03:23,130 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-05 23:03:23,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:03:23,130 INFO L82 PathProgramCache]: Analyzing trace with hash 284319048, now seen corresponding path program 1 times [2020-10-05 23:03:23,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:03:23,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624952808] [2020-10-05 23:03:23,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:03:23,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:03:23,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:03:23,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624952808] [2020-10-05 23:03:23,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:03:23,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-05 23:03:23,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606075621] [2020-10-05 23:03:23,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-05 23:03:23,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:03:23,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-05 23:03:23,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-05 23:03:23,264 INFO L87 Difference]: Start difference. First operand 727 states and 1860 transitions. Second operand 8 states. [2020-10-05 23:03:23,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:03:23,444 INFO L93 Difference]: Finished difference Result 912 states and 2286 transitions. [2020-10-05 23:03:23,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-05 23:03:23,445 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-10-05 23:03:23,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:03:23,451 INFO L225 Difference]: With dead ends: 912 [2020-10-05 23:03:23,451 INFO L226 Difference]: Without dead ends: 773 [2020-10-05 23:03:23,451 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-05 23:03:23,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2020-10-05 23:03:23,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 704. [2020-10-05 23:03:23,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 704 states. [2020-10-05 23:03:23,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 1796 transitions. [2020-10-05 23:03:23,475 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 1796 transitions. Word has length 25 [2020-10-05 23:03:23,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:03:23,476 INFO L479 AbstractCegarLoop]: Abstraction has 704 states and 1796 transitions. [2020-10-05 23:03:23,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-05 23:03:23,476 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 1796 transitions. [2020-10-05 23:03:23,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-05 23:03:23,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:03:23,479 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:03:23,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-05 23:03:23,480 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-05 23:03:23,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:03:23,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1342328380, now seen corresponding path program 1 times [2020-10-05 23:03:23,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:03:23,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999451223] [2020-10-05 23:03:23,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:03:23,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:03:24,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:03:24,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999451223] [2020-10-05 23:03:24,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:03:24,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-05 23:03:24,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749702569] [2020-10-05 23:03:24,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-05 23:03:24,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:03:24,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-05 23:03:24,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-05 23:03:24,082 INFO L87 Difference]: Start difference. First operand 704 states and 1796 transitions. Second operand 14 states. [2020-10-05 23:03:25,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:03:25,997 INFO L93 Difference]: Finished difference Result 1088 states and 2765 transitions. [2020-10-05 23:03:25,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-05 23:03:25,998 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 25 [2020-10-05 23:03:25,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:03:26,006 INFO L225 Difference]: With dead ends: 1088 [2020-10-05 23:03:26,006 INFO L226 Difference]: Without dead ends: 1082 [2020-10-05 23:03:26,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=289, Invalid=833, Unknown=0, NotChecked=0, Total=1122 [2020-10-05 23:03:26,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2020-10-05 23:03:26,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 771. [2020-10-05 23:03:26,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 771 states. [2020-10-05 23:03:26,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 1992 transitions. [2020-10-05 23:03:26,034 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 1992 transitions. Word has length 25 [2020-10-05 23:03:26,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:03:26,035 INFO L479 AbstractCegarLoop]: Abstraction has 771 states and 1992 transitions. [2020-10-05 23:03:26,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-05 23:03:26,035 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 1992 transitions. [2020-10-05 23:03:26,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-05 23:03:26,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:03:26,037 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:03:26,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-05 23:03:26,038 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-05 23:03:26,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:03:26,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1285072000, now seen corresponding path program 1 times [2020-10-05 23:03:26,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:03:26,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882229253] [2020-10-05 23:03:26,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:03:26,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:03:26,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:03:26,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882229253] [2020-10-05 23:03:26,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:03:26,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-05 23:03:26,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726944600] [2020-10-05 23:03:26,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 23:03:26,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:03:26,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 23:03:26,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:03:26,394 INFO L87 Difference]: Start difference. First operand 771 states and 1992 transitions. Second operand 17 states. [2020-10-05 23:03:27,218 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 40 [2020-10-05 23:03:27,686 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2020-10-05 23:03:28,513 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2020-10-05 23:03:28,647 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2020-10-05 23:03:28,829 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2020-10-05 23:03:29,027 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2020-10-05 23:03:29,642 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2020-10-05 23:03:29,899 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43 [2020-10-05 23:03:30,032 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2020-10-05 23:03:30,269 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 37 [2020-10-05 23:03:30,586 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2020-10-05 23:03:30,782 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2020-10-05 23:03:30,951 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2020-10-05 23:03:31,938 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2020-10-05 23:03:32,234 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2020-10-05 23:03:32,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:03:32,329 INFO L93 Difference]: Finished difference Result 1437 states and 3539 transitions. [2020-10-05 23:03:32,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-05 23:03:32,330 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 25 [2020-10-05 23:03:32,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:03:32,339 INFO L225 Difference]: With dead ends: 1437 [2020-10-05 23:03:32,340 INFO L226 Difference]: Without dead ends: 1424 [2020-10-05 23:03:32,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1144 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=898, Invalid=3524, Unknown=0, NotChecked=0, Total=4422 [2020-10-05 23:03:32,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1424 states. [2020-10-05 23:03:32,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1424 to 872. [2020-10-05 23:03:32,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 872 states. [2020-10-05 23:03:32,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 2245 transitions. [2020-10-05 23:03:32,372 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 2245 transitions. Word has length 25 [2020-10-05 23:03:32,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:03:32,373 INFO L479 AbstractCegarLoop]: Abstraction has 872 states and 2245 transitions. [2020-10-05 23:03:32,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 23:03:32,373 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 2245 transitions. [2020-10-05 23:03:32,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-05 23:03:32,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:03:32,376 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:03:32,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-05 23:03:32,377 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-05 23:03:32,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:03:32,377 INFO L82 PathProgramCache]: Analyzing trace with hash -421440302, now seen corresponding path program 2 times [2020-10-05 23:03:32,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:03:32,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937972018] [2020-10-05 23:03:32,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:03:32,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:03:32,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:03:32,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937972018] [2020-10-05 23:03:32,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:03:32,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-05 23:03:32,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797266935] [2020-10-05 23:03:32,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 23:03:32,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:03:32,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 23:03:32,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:03:32,746 INFO L87 Difference]: Start difference. First operand 872 states and 2245 transitions. Second operand 17 states. [2020-10-05 23:03:33,563 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 40 [2020-10-05 23:03:33,700 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 36 [2020-10-05 23:03:34,040 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2020-10-05 23:03:34,867 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2020-10-05 23:03:35,174 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2020-10-05 23:03:35,371 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2020-10-05 23:03:36,022 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2020-10-05 23:03:36,152 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2020-10-05 23:03:36,323 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43 [2020-10-05 23:03:36,463 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2020-10-05 23:03:36,977 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2020-10-05 23:03:37,181 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2020-10-05 23:03:37,360 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2020-10-05 23:03:38,161 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 36 [2020-10-05 23:03:38,514 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2020-10-05 23:03:38,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:03:38,822 INFO L93 Difference]: Finished difference Result 1438 states and 3539 transitions. [2020-10-05 23:03:38,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-05 23:03:38,823 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 25 [2020-10-05 23:03:38,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:03:38,831 INFO L225 Difference]: With dead ends: 1438 [2020-10-05 23:03:38,831 INFO L226 Difference]: Without dead ends: 1419 [2020-10-05 23:03:38,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1141 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=918, Invalid=3638, Unknown=0, NotChecked=0, Total=4556 [2020-10-05 23:03:38,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2020-10-05 23:03:38,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 863. [2020-10-05 23:03:38,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 863 states. [2020-10-05 23:03:38,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 2222 transitions. [2020-10-05 23:03:38,860 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 2222 transitions. Word has length 25 [2020-10-05 23:03:38,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:03:38,860 INFO L479 AbstractCegarLoop]: Abstraction has 863 states and 2222 transitions. [2020-10-05 23:03:38,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 23:03:38,860 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 2222 transitions. [2020-10-05 23:03:38,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-05 23:03:38,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:03:38,863 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:03:38,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-05 23:03:38,863 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-05 23:03:38,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:03:38,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1646732586, now seen corresponding path program 3 times [2020-10-05 23:03:38,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:03:38,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711712988] [2020-10-05 23:03:38,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:03:38,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:03:39,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:03:39,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711712988] [2020-10-05 23:03:39,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:03:39,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-05 23:03:39,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122182743] [2020-10-05 23:03:39,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 23:03:39,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:03:39,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 23:03:39,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:03:39,242 INFO L87 Difference]: Start difference. First operand 863 states and 2222 transitions. Second operand 17 states. [2020-10-05 23:03:39,996 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2020-10-05 23:03:40,156 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2020-10-05 23:03:40,339 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-10-05 23:03:40,518 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2020-10-05 23:03:40,752 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2020-10-05 23:03:41,123 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2020-10-05 23:03:41,420 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2020-10-05 23:03:41,626 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2020-10-05 23:03:41,816 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2020-10-05 23:03:42,040 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2020-10-05 23:03:42,345 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2020-10-05 23:03:42,565 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-10-05 23:03:42,794 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2020-10-05 23:03:42,996 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2020-10-05 23:03:43,238 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2020-10-05 23:03:43,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:03:43,297 INFO L93 Difference]: Finished difference Result 1720 states and 4208 transitions. [2020-10-05 23:03:43,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-05 23:03:43,298 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 25 [2020-10-05 23:03:43,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:03:43,306 INFO L225 Difference]: With dead ends: 1720 [2020-10-05 23:03:43,306 INFO L226 Difference]: Without dead ends: 1702 [2020-10-05 23:03:43,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=543, Invalid=1437, Unknown=0, NotChecked=0, Total=1980 [2020-10-05 23:03:43,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2020-10-05 23:03:43,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 940. [2020-10-05 23:03:43,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 940 states. [2020-10-05 23:03:43,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 2409 transitions. [2020-10-05 23:03:43,336 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 2409 transitions. Word has length 25 [2020-10-05 23:03:43,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:03:43,337 INFO L479 AbstractCegarLoop]: Abstraction has 940 states and 2409 transitions. [2020-10-05 23:03:43,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 23:03:43,337 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 2409 transitions. [2020-10-05 23:03:43,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-05 23:03:43,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:03:43,340 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:03:43,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-05 23:03:43,340 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-05 23:03:43,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:03:43,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1982583190, now seen corresponding path program 3 times [2020-10-05 23:03:43,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:03:43,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185810385] [2020-10-05 23:03:43,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:03:43,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:03:43,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:03:43,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185810385] [2020-10-05 23:03:43,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:03:43,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-05 23:03:43,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719717308] [2020-10-05 23:03:43,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:03:43,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:03:43,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:03:43,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:03:43,949 INFO L87 Difference]: Start difference. First operand 940 states and 2409 transitions. Second operand 15 states. [2020-10-05 23:03:44,201 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 33 [2020-10-05 23:03:44,372 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-10-05 23:03:44,659 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2020-10-05 23:03:44,871 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2020-10-05 23:03:45,196 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2020-10-05 23:03:45,477 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2020-10-05 23:03:45,950 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2020-10-05 23:03:46,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:03:46,872 INFO L93 Difference]: Finished difference Result 1246 states and 3165 transitions. [2020-10-05 23:03:46,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-05 23:03:46,873 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 25 [2020-10-05 23:03:46,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:03:46,879 INFO L225 Difference]: With dead ends: 1246 [2020-10-05 23:03:46,879 INFO L226 Difference]: Without dead ends: 1230 [2020-10-05 23:03:46,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=290, Invalid=832, Unknown=0, NotChecked=0, Total=1122 [2020-10-05 23:03:46,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2020-10-05 23:03:46,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 1050. [2020-10-05 23:03:46,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1050 states. [2020-10-05 23:03:46,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 2751 transitions. [2020-10-05 23:03:46,912 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 2751 transitions. Word has length 25 [2020-10-05 23:03:46,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:03:46,913 INFO L479 AbstractCegarLoop]: Abstraction has 1050 states and 2751 transitions. [2020-10-05 23:03:46,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:03:46,913 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 2751 transitions. [2020-10-05 23:03:46,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-05 23:03:46,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:03:46,932 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:03:46,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-05 23:03:46,932 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-05 23:03:46,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:03:46,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1689584038, now seen corresponding path program 2 times [2020-10-05 23:03:46,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:03:46,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511686325] [2020-10-05 23:03:46,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:03:46,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-05 23:03:46,966 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-05 23:03:46,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-05 23:03:46,988 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-05 23:03:47,020 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-05 23:03:47,021 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-05 23:03:47,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-05 23:03:47,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.10 11:03:47 BasicIcfg [2020-10-05 23:03:47,071 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-05 23:03:47,073 INFO L168 Benchmark]: Toolchain (without parser) took 37678.70 ms. Allocated memory was 138.9 MB in the beginning and 497.0 MB in the end (delta: 358.1 MB). Free memory was 99.9 MB in the beginning and 451.4 MB in the end (delta: -351.5 MB). Peak memory consumption was 6.6 MB. Max. memory is 7.1 GB. [2020-10-05 23:03:47,074 INFO L168 Benchmark]: CDTParser took 1.40 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-10-05 23:03:47,074 INFO L168 Benchmark]: CACSL2BoogieTranslator took 368.95 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 99.7 MB in the beginning and 179.3 MB in the end (delta: -79.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. [2020-10-05 23:03:47,075 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.54 ms. Allocated memory is still 201.9 MB. Free memory was 179.3 MB in the beginning and 177.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-05 23:03:47,076 INFO L168 Benchmark]: Boogie Preprocessor took 19.51 ms. Allocated memory is still 201.9 MB. Free memory was 177.3 MB in the beginning and 176.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-10-05 23:03:47,076 INFO L168 Benchmark]: RCFGBuilder took 335.20 ms. Allocated memory is still 201.9 MB. Free memory was 176.0 MB in the beginning and 158.3 MB in the end (delta: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 7.1 GB. [2020-10-05 23:03:47,077 INFO L168 Benchmark]: TraceAbstraction took 36918.39 ms. Allocated memory was 201.9 MB in the beginning and 497.0 MB in the end (delta: 295.2 MB). Free memory was 157.6 MB in the beginning and 451.4 MB in the end (delta: -293.8 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-10-05 23:03:47,085 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.40 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 368.95 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 99.7 MB in the beginning and 179.3 MB in the end (delta: -79.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 31.54 ms. Allocated memory is still 201.9 MB. Free memory was 179.3 MB in the beginning and 177.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 19.51 ms. Allocated memory is still 201.9 MB. Free memory was 177.3 MB in the beginning and 176.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 335.20 ms. Allocated memory is still 201.9 MB. Free memory was 176.0 MB in the beginning and 158.3 MB in the end (delta: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 36918.39 ms. Allocated memory was 201.9 MB in the beginning and 497.0 MB in the end (delta: 295.2 MB). Free memory was 157.6 MB in the beginning and 451.4 MB in the end (delta: -293.8 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 81 ProgramPointsBefore, 39 ProgramPointsAfterwards, 77 TransitionsBefore, 35 TransitionsAfterwards, 1008 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 495 VarBasedMoverChecksPositive, 22 VarBasedMoverChecksNegative, 4 SemBasedMoverChecksPositive, 26 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 1623 CheckedPairsTotal, 43 TotalNumberOfCompositions - CounterExampleResult [Line: 37]: assertion can be violated assertion can be violated We found a FailurePath: [L13] 0 int counter = 0; [L23] 0 int val = 0; [L25] 0 pthread_t first_thread_id; [L26] 0 pthread_t second_thread_id; [L27] 0 pthread_t third_thread_id; [L29] FCALL, FORK 0 pthread_create(&first_thread_id, NULL, foo, &val) VAL [counter=0, n={5:0}] [L30] FCALL, FORK 0 pthread_create(&second_thread_id, NULL, foo, &val) VAL [counter=0, n={5:0}] [L16] 2 int *x = (int *)n; [L17] 2 ++counter VAL [++counter=1, counter=0, n={5:0}, n={5:0}, x={5:0}] [L31] FCALL, FORK 0 pthread_create(&third_thread_id, NULL, foo, &val) VAL [++counter=1, counter=0, n={5:0}, n={5:0}, x={5:0}] [L16] 3 int *x = (int *)n; [L17] EXPR 3 ++counter VAL [++counter=1, counter=1, n={5:0}, n={5:0}, x={5:0}] [L17] 3 *x = ++counter [L18] 3 return 0; [L17] 2 ++counter VAL [++counter=1, \result={0:0}, counter=2, n={5:0}, n={5:0}, x={5:0}] [L16] 1 int *x = (int *)n; [L17] EXPR 1 ++counter VAL [++counter=3, \result={0:0}, counter=3, n={5:0}, n={5:0}, x={5:0}] [L33] 0 \read(first_thread_id) VAL [++counter=3, \result={0:0}, counter=3, n={5:0}, n={5:0}, x={5:0}] [L17] 1 *x = ++counter [L18] 1 return 0; [L17] 2 *x = ++counter [L18] 2 return 0; [L33] FCALL, JOIN 1 pthread_join(first_thread_id, NULL) VAL [\result={0:0}, counter=3, n={5:0}, n={5:0}, x={5:0}] [L34] 0 \read(second_thread_id) VAL [\result={0:0}, counter=3, n={5:0}, n={5:0}, x={5:0}] [L34] FCALL, JOIN 2 pthread_join(second_thread_id, NULL) VAL [\result={0:0}, counter=3, n={5:0}, n={5:0}, x={5:0}] [L35] 0 \read(third_thread_id) VAL [\result={0:0}, counter=3, n={5:0}, n={5:0}, x={5:0}] [L35] FCALL, JOIN 3 pthread_join(third_thread_id, NULL) VAL [\result={0:0}, counter=3, n={5:0}, n={5:0}, x={5:0}] [L37] FCALL 0 IdentifierExpression[val] [L37] 0 CodeAnnotStmt[Assertion] VAL [\result={0:0}, counter=3, n={5:0}, n={5:0}, x={5:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 36.6s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 29.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 458 SDtfs, 2639 SDslu, 2851 SDs, 0 SdLazy, 8096 SolverSat, 534 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 384 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 375 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3983 ImplicationChecksByTransitivity, 24.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1050occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 4035 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 275 NumberOfCodeBlocks, 275 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 240 ConstructedInterpolants, 0 QuantifiedInterpolants, 119808 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...