/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/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf -i ../../../trunk/examples/concurrent/pthreads/forkMultipleTimes.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 12:21:50,198 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 12:21:50,202 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 12:21:50,239 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 12:21:50,240 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 12:21:50,248 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 12:21:50,250 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 12:21:50,254 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 12:21:50,257 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 12:21:50,260 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 12:21:50,261 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 12:21:50,262 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 12:21:50,262 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 12:21:50,265 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 12:21:50,267 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 12:21:50,268 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 12:21:50,270 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 12:21:50,271 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 12:21:50,272 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 12:21:50,282 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 12:21:50,284 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 12:21:50,285 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 12:21:50,286 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 12:21:50,286 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 12:21:50,297 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 12:21:50,297 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 12:21:50,298 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 12:21:50,298 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 12:21:50,299 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 12:21:50,302 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 12:21:50,302 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 12:21:50,303 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 12:21:50,303 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 12:21:50,305 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 12:21:50,306 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 12:21:50,306 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 12:21:50,307 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 12:21:50,307 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 12:21:50,307 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 12:21:50,308 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 12:21:50,309 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 12:21:50,310 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf [2020-10-16 12:21:50,345 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 12:21:50,345 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 12:21:50,346 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 12:21:50,346 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 12:21:50,347 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 12:21:50,347 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 12:21:50,347 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 12:21:50,347 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 12:21:50,347 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 12:21:50,348 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 12:21:50,348 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 12:21:50,348 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 12:21:50,348 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 12:21:50,348 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 12:21:50,349 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 12:21:50,349 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 12:21:50,349 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 12:21:50,349 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 12:21:50,349 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 12:21:50,349 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 12:21:50,350 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 12:21:50,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 12:21:50,350 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 12:21:50,350 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 12:21:50,350 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 12:21:50,351 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 12:21:50,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 12:21:50,351 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 12:21:50,351 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 12:21:50,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 12:21:50,651 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 12:21:50,655 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 12:21:50,656 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 12:21:50,657 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 12:21:50,657 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/forkMultipleTimes.c [2020-10-16 12:21:50,730 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b4ea14cd1/924296f7275d4cb7bc97830aa46027bd/FLAG85f52d364 [2020-10-16 12:21:51,185 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 12:21:51,185 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/concurrent/pthreads/forkMultipleTimes.c [2020-10-16 12:21:51,186 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2020-10-16 12:21:51,186 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2020-10-16 12:21:51,226 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b4ea14cd1/924296f7275d4cb7bc97830aa46027bd/FLAG85f52d364 [2020-10-16 12:21:51,563 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b4ea14cd1/924296f7275d4cb7bc97830aa46027bd [2020-10-16 12:21:51,574 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 12:21:51,576 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 12:21:51,578 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 12:21:51,578 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 12:21:51,582 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 12:21:51,583 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:21:51" (1/1) ... [2020-10-16 12:21:51,588 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50d9e1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:21:51, skipping insertion in model container [2020-10-16 12:21:51,589 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:21:51" (1/1) ... [2020-10-16 12:21:51,599 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 12:21:51,621 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 12:21:51,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:21:51,882 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 12:21:51,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:21:51,996 INFO L208 MainTranslator]: Completed translation [2020-10-16 12:21:51,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:21:51 WrapperNode [2020-10-16 12:21:51,997 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 12:21:51,998 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 12:21:51,998 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 12:21:51,999 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 12:21:52,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:21:51" (1/1) ... [2020-10-16 12:21:52,013 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:21:51" (1/1) ... [2020-10-16 12:21:52,033 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 12:21:52,033 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 12:21:52,034 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 12:21:52,034 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 12:21:52,042 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:21:51" (1/1) ... [2020-10-16 12:21:52,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:21:51" (1/1) ... [2020-10-16 12:21:52,044 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:21:51" (1/1) ... [2020-10-16 12:21:52,045 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:21:51" (1/1) ... [2020-10-16 12:21:52,049 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:21:51" (1/1) ... [2020-10-16 12:21:52,051 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:21:51" (1/1) ... [2020-10-16 12:21:52,053 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:21:51" (1/1) ... [2020-10-16 12:21:52,055 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 12:21:52,056 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 12:21:52,056 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 12:21:52,056 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 12:21:52,057 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:21:51" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:21:52,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 12:21:52,132 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-10-16 12:21:52,132 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-10-16 12:21:52,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 12:21:52,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 12:21:52,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-16 12:21:52,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-16 12:21:52,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 12:21:52,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 12:21:52,138 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 12:21:52,394 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 12:21:52,395 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-16 12:21:52,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:21:52 BoogieIcfgContainer [2020-10-16 12:21:52,396 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 12:21:52,398 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 12:21:52,398 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 12:21:52,401 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 12:21:52,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 12:21:51" (1/3) ... [2020-10-16 12:21:52,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51257364 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:21:52, skipping insertion in model container [2020-10-16 12:21:52,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:21:51" (2/3) ... [2020-10-16 12:21:52,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51257364 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:21:52, skipping insertion in model container [2020-10-16 12:21:52,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:21:52" (3/3) ... [2020-10-16 12:21:52,405 INFO L111 eAbstractionObserver]: Analyzing ICFG forkMultipleTimes.c [2020-10-16 12:21:52,417 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 12:21:52,417 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 12:21:52,424 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 12:21:52,426 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 12:21:52,471 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,472 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,472 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,472 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,473 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,473 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,476 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,476 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,477 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,477 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,478 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,478 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,478 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,478 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,479 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,482 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,483 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,483 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,483 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,484 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,484 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,484 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,484 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,485 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,485 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,485 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,486 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,489 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,490 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,490 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,490 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,491 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,491 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,492 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,492 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,493 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,493 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,494 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,494 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,495 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,495 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,495 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,496 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,496 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,498 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,504 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,505 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,505 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,505 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,505 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,506 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,506 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,531 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,531 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,531 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,531 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,531 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,532 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,532 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,536 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,536 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,536 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,536 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,537 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,537 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,537 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:52,554 INFO L149 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2020-10-16 12:21:52,567 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 12:21:52,587 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 12:21:52,588 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 12:21:52,588 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 12:21:52,588 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 12:21:52,588 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 12:21:52,588 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 12:21:52,589 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 12:21:52,589 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 12:21:52,605 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 12:21:52,606 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 77 transitions, 196 flow [2020-10-16 12:21:52,609 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 77 transitions, 196 flow [2020-10-16 12:21:52,611 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 81 places, 77 transitions, 196 flow [2020-10-16 12:21:52,677 INFO L129 PetriNetUnfolder]: 5/85 cut-off events. [2020-10-16 12:21:52,677 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2020-10-16 12:21:52,684 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. [2020-10-16 12:21:52,687 INFO L117 LiptonReduction]: Number of co-enabled transitions 1008 [2020-10-16 12:21:53,839 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2020-10-16 12:21:53,966 INFO L132 LiptonReduction]: Checked pairs total: 4010 [2020-10-16 12:21:53,966 INFO L134 LiptonReduction]: Total number of compositions: 43 [2020-10-16 12:21:53,974 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 35 transitions, 112 flow [2020-10-16 12:21:54,007 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 354 states. [2020-10-16 12:21:54,009 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states. [2020-10-16 12:21:54,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 12:21:54,025 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:21:54,026 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] [2020-10-16 12:21:54,027 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 12:21:54,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:21:54,033 INFO L82 PathProgramCache]: Analyzing trace with hash -126150362, now seen corresponding path program 1 times [2020-10-16 12:21:54,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:21:54,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837810981] [2020-10-16 12:21:54,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:21:54,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:21:54,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:21:54,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837810981] [2020-10-16 12:21:54,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:21:54,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-16 12:21:54,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516379782] [2020-10-16 12:21:54,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 12:21:54,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:21:54,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 12:21:54,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-16 12:21:54,712 INFO L87 Difference]: Start difference. First operand 354 states. Second operand 12 states. [2020-10-16 12:21:55,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:21:55,827 INFO L93 Difference]: Finished difference Result 748 states and 1901 transitions. [2020-10-16 12:21:55,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-16 12:21:55,829 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 25 [2020-10-16 12:21:55,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:21:55,855 INFO L225 Difference]: With dead ends: 748 [2020-10-16 12:21:55,856 INFO L226 Difference]: Without dead ends: 740 [2020-10-16 12:21:55,857 INFO L677 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 [2020-10-16 12:21:55,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2020-10-16 12:21:55,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 487. [2020-10-16 12:21:55,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 487 states. [2020-10-16 12:21:55,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 1246 transitions. [2020-10-16 12:21:55,951 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 1246 transitions. Word has length 25 [2020-10-16 12:21:55,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:21:55,953 INFO L481 AbstractCegarLoop]: Abstraction has 487 states and 1246 transitions. [2020-10-16 12:21:55,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 12:21:55,953 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 1246 transitions. [2020-10-16 12:21:55,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 12:21:55,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:21:55,958 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] [2020-10-16 12:21:55,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 12:21:55,959 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 12:21:55,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:21:55,959 INFO L82 PathProgramCache]: Analyzing trace with hash -63589262, now seen corresponding path program 2 times [2020-10-16 12:21:55,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:21:55,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084314592] [2020-10-16 12:21:55,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:21:55,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:21:56,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:21:56,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084314592] [2020-10-16 12:21:56,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:21:56,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-16 12:21:56,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112205819] [2020-10-16 12:21:56,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 12:21:56,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:21:56,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 12:21:56,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-10-16 12:21:56,535 INFO L87 Difference]: Start difference. First operand 487 states and 1246 transitions. Second operand 16 states. [2020-10-16 12:21:59,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:21:59,416 INFO L93 Difference]: Finished difference Result 1252 states and 3200 transitions. [2020-10-16 12:21:59,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-16 12:21:59,417 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-16 12:21:59,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:21:59,431 INFO L225 Difference]: With dead ends: 1252 [2020-10-16 12:21:59,431 INFO L226 Difference]: Without dead ends: 1243 [2020-10-16 12:21:59,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=322, Invalid=1570, Unknown=0, NotChecked=0, Total=1892 [2020-10-16 12:21:59,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1243 states. [2020-10-16 12:21:59,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1243 to 560. [2020-10-16 12:21:59,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 560 states. [2020-10-16 12:21:59,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 1408 transitions. [2020-10-16 12:21:59,513 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 1408 transitions. Word has length 25 [2020-10-16 12:21:59,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:21:59,513 INFO L481 AbstractCegarLoop]: Abstraction has 560 states and 1408 transitions. [2020-10-16 12:21:59,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 12:21:59,514 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 1408 transitions. [2020-10-16 12:21:59,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 12:21:59,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:21:59,516 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] [2020-10-16 12:21:59,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 12:21:59,517 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 12:21:59,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:21:59,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1895995450, now seen corresponding path program 1 times [2020-10-16 12:21:59,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:21:59,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276623164] [2020-10-16 12:21:59,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:21:59,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:22:00,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:22:00,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276623164] [2020-10-16 12:22:00,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:22:00,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-16 12:22:00,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095311597] [2020-10-16 12:22:00,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 12:22:00,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:22:00,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 12:22:00,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-16 12:22:00,041 INFO L87 Difference]: Start difference. First operand 560 states and 1408 transitions. Second operand 13 states. [2020-10-16 12:22:00,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:22:00,926 INFO L93 Difference]: Finished difference Result 683 states and 1739 transitions. [2020-10-16 12:22:00,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-16 12:22:00,926 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 25 [2020-10-16 12:22:00,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:22:00,931 INFO L225 Difference]: With dead ends: 683 [2020-10-16 12:22:00,931 INFO L226 Difference]: Without dead ends: 675 [2020-10-16 12:22:00,932 INFO L677 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 [2020-10-16 12:22:00,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2020-10-16 12:22:00,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 639. [2020-10-16 12:22:00,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 639 states. [2020-10-16 12:22:00,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 1623 transitions. [2020-10-16 12:22:00,956 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 1623 transitions. Word has length 25 [2020-10-16 12:22:00,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:22:00,956 INFO L481 AbstractCegarLoop]: Abstraction has 639 states and 1623 transitions. [2020-10-16 12:22:00,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 12:22:00,957 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 1623 transitions. [2020-10-16 12:22:00,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 12:22:00,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:22:00,959 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] [2020-10-16 12:22:00,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 12:22:00,960 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 12:22:00,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:22:00,960 INFO L82 PathProgramCache]: Analyzing trace with hash 374980096, now seen corresponding path program 2 times [2020-10-16 12:22:00,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:22:00,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626321016] [2020-10-16 12:22:00,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:22:00,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:22:01,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:22:01,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626321016] [2020-10-16 12:22:01,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:22:01,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-16 12:22:01,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000016584] [2020-10-16 12:22:01,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 12:22:01,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:22:01,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 12:22:01,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:22:01,461 INFO L87 Difference]: Start difference. First operand 639 states and 1623 transitions. Second operand 17 states. [2020-10-16 12:22:04,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:22:04,850 INFO L93 Difference]: Finished difference Result 1378 states and 3442 transitions. [2020-10-16 12:22:04,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-16 12:22:04,851 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 25 [2020-10-16 12:22:04,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:22:04,859 INFO L225 Difference]: With dead ends: 1378 [2020-10-16 12:22:04,859 INFO L226 Difference]: Without dead ends: 1360 [2020-10-16 12:22:04,860 INFO L677 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 [2020-10-16 12:22:04,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1360 states. [2020-10-16 12:22:04,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1360 to 727. [2020-10-16 12:22:04,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2020-10-16 12:22:04,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1860 transitions. [2020-10-16 12:22:04,892 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1860 transitions. Word has length 25 [2020-10-16 12:22:04,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:22:04,893 INFO L481 AbstractCegarLoop]: Abstraction has 727 states and 1860 transitions. [2020-10-16 12:22:04,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 12:22:04,893 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1860 transitions. [2020-10-16 12:22:04,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 12:22:04,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:22:04,896 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] [2020-10-16 12:22:04,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 12:22:04,896 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 12:22:04,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:22:04,897 INFO L82 PathProgramCache]: Analyzing trace with hash 284319048, now seen corresponding path program 1 times [2020-10-16 12:22:04,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:22:04,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708753046] [2020-10-16 12:22:04,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:22:04,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:22:05,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:22:05,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708753046] [2020-10-16 12:22:05,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:22:05,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-16 12:22:05,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173459378] [2020-10-16 12:22:05,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-16 12:22:05,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:22:05,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-16 12:22:05,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-16 12:22:05,077 INFO L87 Difference]: Start difference. First operand 727 states and 1860 transitions. Second operand 8 states. [2020-10-16 12:22:05,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:22:05,251 INFO L93 Difference]: Finished difference Result 912 states and 2286 transitions. [2020-10-16 12:22:05,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 12:22:05,251 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-10-16 12:22:05,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:22:05,256 INFO L225 Difference]: With dead ends: 912 [2020-10-16 12:22:05,257 INFO L226 Difference]: Without dead ends: 773 [2020-10-16 12:22:05,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-16 12:22:05,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2020-10-16 12:22:05,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 704. [2020-10-16 12:22:05,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 704 states. [2020-10-16 12:22:05,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 1796 transitions. [2020-10-16 12:22:05,278 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 1796 transitions. Word has length 25 [2020-10-16 12:22:05,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:22:05,278 INFO L481 AbstractCegarLoop]: Abstraction has 704 states and 1796 transitions. [2020-10-16 12:22:05,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-16 12:22:05,278 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 1796 transitions. [2020-10-16 12:22:05,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 12:22:05,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:22:05,281 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] [2020-10-16 12:22:05,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 12:22:05,281 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 12:22:05,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:22:05,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1342328380, now seen corresponding path program 1 times [2020-10-16 12:22:05,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:22:05,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883378794] [2020-10-16 12:22:05,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:22:05,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:22:05,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:22:05,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883378794] [2020-10-16 12:22:05,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:22:05,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-16 12:22:05,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821979333] [2020-10-16 12:22:05,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-16 12:22:05,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:22:05,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-16 12:22:05,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-16 12:22:05,777 INFO L87 Difference]: Start difference. First operand 704 states and 1796 transitions. Second operand 14 states. [2020-10-16 12:22:07,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:22:07,743 INFO L93 Difference]: Finished difference Result 1088 states and 2765 transitions. [2020-10-16 12:22:07,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-16 12:22:07,743 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 25 [2020-10-16 12:22:07,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:22:07,751 INFO L225 Difference]: With dead ends: 1088 [2020-10-16 12:22:07,751 INFO L226 Difference]: Without dead ends: 1082 [2020-10-16 12:22:07,752 INFO L677 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 [2020-10-16 12:22:07,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2020-10-16 12:22:07,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 771. [2020-10-16 12:22:07,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 771 states. [2020-10-16 12:22:07,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 1992 transitions. [2020-10-16 12:22:07,777 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 1992 transitions. Word has length 25 [2020-10-16 12:22:07,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:22:07,778 INFO L481 AbstractCegarLoop]: Abstraction has 771 states and 1992 transitions. [2020-10-16 12:22:07,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-16 12:22:07,778 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 1992 transitions. [2020-10-16 12:22:07,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 12:22:07,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:22:07,781 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] [2020-10-16 12:22:07,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 12:22:07,781 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 12:22:07,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:22:07,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1285072000, now seen corresponding path program 1 times [2020-10-16 12:22:07,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:22:07,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711602919] [2020-10-16 12:22:07,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:22:07,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:22:08,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:22:08,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711602919] [2020-10-16 12:22:08,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:22:08,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-16 12:22:08,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659739917] [2020-10-16 12:22:08,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 12:22:08,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:22:08,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 12:22:08,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:22:08,153 INFO L87 Difference]: Start difference. First operand 771 states and 1992 transitions. Second operand 17 states. [2020-10-16 12:22:08,907 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 40 [2020-10-16 12:22:09,046 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 36 [2020-10-16 12:22:09,396 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2020-10-16 12:22:10,213 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2020-10-16 12:22:10,336 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2020-10-16 12:22:10,518 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2020-10-16 12:22:10,722 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2020-10-16 12:22:11,328 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2020-10-16 12:22:11,609 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43 [2020-10-16 12:22:11,748 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2020-10-16 12:22:12,297 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2020-10-16 12:22:12,494 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2020-10-16 12:22:12,664 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2020-10-16 12:22:13,626 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2020-10-16 12:22:13,926 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2020-10-16 12:22:14,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:22:14,018 INFO L93 Difference]: Finished difference Result 1437 states and 3539 transitions. [2020-10-16 12:22:14,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-16 12:22:14,019 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 25 [2020-10-16 12:22:14,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:22:14,027 INFO L225 Difference]: With dead ends: 1437 [2020-10-16 12:22:14,027 INFO L226 Difference]: Without dead ends: 1424 [2020-10-16 12:22:14,029 INFO L677 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 [2020-10-16 12:22:14,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1424 states. [2020-10-16 12:22:14,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1424 to 872. [2020-10-16 12:22:14,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 872 states. [2020-10-16 12:22:14,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 2245 transitions. [2020-10-16 12:22:14,057 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 2245 transitions. Word has length 25 [2020-10-16 12:22:14,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:22:14,058 INFO L481 AbstractCegarLoop]: Abstraction has 872 states and 2245 transitions. [2020-10-16 12:22:14,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 12:22:14,058 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 2245 transitions. [2020-10-16 12:22:14,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 12:22:14,061 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:22:14,061 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] [2020-10-16 12:22:14,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 12:22:14,061 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 12:22:14,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:22:14,062 INFO L82 PathProgramCache]: Analyzing trace with hash -421440302, now seen corresponding path program 2 times [2020-10-16 12:22:14,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:22:14,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992543079] [2020-10-16 12:22:14,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:22:14,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:22:14,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:22:14,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992543079] [2020-10-16 12:22:14,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:22:14,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-16 12:22:14,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875028944] [2020-10-16 12:22:14,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 12:22:14,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:22:14,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 12:22:14,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:22:14,407 INFO L87 Difference]: Start difference. First operand 872 states and 2245 transitions. Second operand 17 states. [2020-10-16 12:22:15,214 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 40 [2020-10-16 12:22:15,685 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2020-10-16 12:22:16,509 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2020-10-16 12:22:16,811 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2020-10-16 12:22:17,007 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2020-10-16 12:22:17,673 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2020-10-16 12:22:17,964 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43 [2020-10-16 12:22:18,100 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2020-10-16 12:22:18,602 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2020-10-16 12:22:18,787 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2020-10-16 12:22:18,963 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2020-10-16 12:22:20,099 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2020-10-16 12:22:20,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:22:20,409 INFO L93 Difference]: Finished difference Result 1438 states and 3539 transitions. [2020-10-16 12:22:20,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-16 12:22:20,409 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 25 [2020-10-16 12:22:20,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:22:20,416 INFO L225 Difference]: With dead ends: 1438 [2020-10-16 12:22:20,416 INFO L226 Difference]: Without dead ends: 1419 [2020-10-16 12:22:20,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1141 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=918, Invalid=3638, Unknown=0, NotChecked=0, Total=4556 [2020-10-16 12:22:20,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2020-10-16 12:22:20,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 863. [2020-10-16 12:22:20,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 863 states. [2020-10-16 12:22:20,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 2222 transitions. [2020-10-16 12:22:20,442 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 2222 transitions. Word has length 25 [2020-10-16 12:22:20,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:22:20,442 INFO L481 AbstractCegarLoop]: Abstraction has 863 states and 2222 transitions. [2020-10-16 12:22:20,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 12:22:20,442 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 2222 transitions. [2020-10-16 12:22:20,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 12:22:20,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:22:20,445 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] [2020-10-16 12:22:20,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 12:22:20,445 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 12:22:20,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:22:20,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1646732586, now seen corresponding path program 3 times [2020-10-16 12:22:20,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:22:20,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153826544] [2020-10-16 12:22:20,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:22:20,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:22:20,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:22:20,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153826544] [2020-10-16 12:22:20,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:22:20,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-16 12:22:20,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018599876] [2020-10-16 12:22:20,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 12:22:20,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:22:20,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 12:22:20,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2020-10-16 12:22:20,843 INFO L87 Difference]: Start difference. First operand 863 states and 2222 transitions. Second operand 17 states. [2020-10-16 12:22:21,598 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2020-10-16 12:22:21,757 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2020-10-16 12:22:21,942 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-10-16 12:22:22,130 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2020-10-16 12:22:22,356 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2020-10-16 12:22:22,707 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2020-10-16 12:22:22,996 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2020-10-16 12:22:23,216 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2020-10-16 12:22:23,407 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2020-10-16 12:22:23,635 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2020-10-16 12:22:23,933 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2020-10-16 12:22:24,144 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-10-16 12:22:24,379 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2020-10-16 12:22:24,576 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2020-10-16 12:22:24,817 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2020-10-16 12:22:24,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:22:24,876 INFO L93 Difference]: Finished difference Result 1720 states and 4208 transitions. [2020-10-16 12:22:24,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-16 12:22:24,876 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 25 [2020-10-16 12:22:24,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:22:24,885 INFO L225 Difference]: With dead ends: 1720 [2020-10-16 12:22:24,885 INFO L226 Difference]: Without dead ends: 1702 [2020-10-16 12:22:24,886 INFO L677 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 [2020-10-16 12:22:24,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2020-10-16 12:22:24,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 940. [2020-10-16 12:22:24,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 940 states. [2020-10-16 12:22:24,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 2409 transitions. [2020-10-16 12:22:24,914 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 2409 transitions. Word has length 25 [2020-10-16 12:22:24,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:22:24,914 INFO L481 AbstractCegarLoop]: Abstraction has 940 states and 2409 transitions. [2020-10-16 12:22:24,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 12:22:24,915 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 2409 transitions. [2020-10-16 12:22:24,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 12:22:24,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:22:24,917 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] [2020-10-16 12:22:24,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 12:22:24,918 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 12:22:24,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:22:24,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1982583190, now seen corresponding path program 3 times [2020-10-16 12:22:24,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:22:24,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994084886] [2020-10-16 12:22:24,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:22:24,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:22:25,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:22:25,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994084886] [2020-10-16 12:22:25,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:22:25,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-16 12:22:25,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428301157] [2020-10-16 12:22:25,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 12:22:25,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:22:25,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 12:22:25,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-10-16 12:22:25,542 INFO L87 Difference]: Start difference. First operand 940 states and 2409 transitions. Second operand 15 states. [2020-10-16 12:22:25,794 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 33 [2020-10-16 12:22:25,964 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-10-16 12:22:26,247 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2020-10-16 12:22:26,466 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2020-10-16 12:22:26,815 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2020-10-16 12:22:27,105 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2020-10-16 12:22:27,593 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2020-10-16 12:22:28,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:22:28,503 INFO L93 Difference]: Finished difference Result 1246 states and 3165 transitions. [2020-10-16 12:22:28,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-16 12:22:28,508 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 25 [2020-10-16 12:22:28,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:22:28,514 INFO L225 Difference]: With dead ends: 1246 [2020-10-16 12:22:28,514 INFO L226 Difference]: Without dead ends: 1230 [2020-10-16 12:22:28,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=290, Invalid=832, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 12:22:28,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2020-10-16 12:22:28,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 1050. [2020-10-16 12:22:28,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1050 states. [2020-10-16 12:22:28,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 2751 transitions. [2020-10-16 12:22:28,541 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 2751 transitions. Word has length 25 [2020-10-16 12:22:28,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:22:28,542 INFO L481 AbstractCegarLoop]: Abstraction has 1050 states and 2751 transitions. [2020-10-16 12:22:28,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 12:22:28,542 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 2751 transitions. [2020-10-16 12:22:28,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 12:22:28,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:22:28,545 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] [2020-10-16 12:22:28,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-16 12:22:28,545 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 12:22:28,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:22:28,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1689584038, now seen corresponding path program 2 times [2020-10-16 12:22:28,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:22:28,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899803514] [2020-10-16 12:22:28,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:22:28,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 12:22:28,562 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 12:22:28,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 12:22:28,577 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 12:22:28,604 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 12:22:28,605 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 12:22:28,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-16 12:22:28,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 12:22:28 BasicIcfg [2020-10-16 12:22:28,657 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 12:22:28,659 INFO L168 Benchmark]: Toolchain (without parser) took 37083.75 ms. Allocated memory was 141.0 MB in the beginning and 465.0 MB in the end (delta: 324.0 MB). Free memory was 102.6 MB in the beginning and 196.1 MB in the end (delta: -93.4 MB). Peak memory consumption was 230.6 MB. Max. memory is 7.1 GB. [2020-10-16 12:22:28,660 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-16 12:22:28,661 INFO L168 Benchmark]: CACSL2BoogieTranslator took 419.70 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 102.2 MB in the beginning and 183.1 MB in the end (delta: -80.8 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. [2020-10-16 12:22:28,661 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.83 ms. Allocated memory is still 204.5 MB. Free memory was 183.1 MB in the beginning and 180.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-10-16 12:22:28,662 INFO L168 Benchmark]: Boogie Preprocessor took 22.19 ms. Allocated memory is still 204.5 MB. Free memory was 180.7 MB in the beginning and 179.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-16 12:22:28,663 INFO L168 Benchmark]: RCFGBuilder took 340.56 ms. Allocated memory is still 204.5 MB. Free memory was 179.4 MB in the beginning and 162.0 MB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 7.1 GB. [2020-10-16 12:22:28,663 INFO L168 Benchmark]: TraceAbstraction took 36259.92 ms. Allocated memory was 204.5 MB in the beginning and 465.0 MB in the end (delta: 260.6 MB). Free memory was 161.4 MB in the beginning and 196.1 MB in the end (delta: -34.7 MB). Peak memory consumption was 225.9 MB. Max. memory is 7.1 GB. [2020-10-16 12:22:28,667 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 419.70 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 102.2 MB in the beginning and 183.1 MB in the end (delta: -80.8 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 34.83 ms. Allocated memory is still 204.5 MB. Free memory was 183.1 MB in the beginning and 180.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 22.19 ms. Allocated memory is still 204.5 MB. Free memory was 180.7 MB in the beginning and 179.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 340.56 ms. Allocated memory is still 204.5 MB. Free memory was 179.4 MB in the beginning and 162.0 MB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 36259.92 ms. Allocated memory was 204.5 MB in the beginning and 465.0 MB in the end (delta: 260.6 MB). Free memory was 161.4 MB in the beginning and 196.1 MB in the end (delta: -34.7 MB). Peak memory consumption was 225.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 512 VarBasedMoverChecksPositive, 32 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 104 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.3s, 81 PlacesBefore, 39 PlacesAfterwards, 77 TransitionsBefore, 35 TransitionsAfterwards, 1008 CoEnabledTransitionPairs, 5 FixpointIterations, 25 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 43 TotalNumberOfCompositions, 4010 MoverChecksTotal - 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={8:0}] [L30] FCALL, FORK 0 pthread_create(&second_thread_id, NULL, foo, &val) VAL [counter=0, n={8:0}] [L16] 2 int *x = (int *)n; [L17] 2 ++counter VAL [++counter=1, counter=0, n={8:0}, n={8:0}, x={8:0}] [L31] FCALL, FORK 0 pthread_create(&third_thread_id, NULL, foo, &val) VAL [++counter=1, counter=0, n={8:0}, n={8:0}, x={8:0}] [L16] 3 int *x = (int *)n; [L17] EXPR 3 ++counter VAL [++counter=1, counter=1, n={8:0}, n={8:0}, x={8:0}] [L17] 3 *x = ++counter [L18] 3 return 0; [L17] 2 ++counter VAL [++counter=1, \result={0:0}, counter=2, n={8:0}, n={8:0}, x={8:0}] [L16] 1 int *x = (int *)n; [L17] EXPR 1 ++counter VAL [++counter=3, \result={0:0}, counter=3, n={8:0}, n={8:0}, x={8:0}] [L33] 0 \read(first_thread_id) VAL [++counter=3, \result={0:0}, counter=3, n={8:0}, n={8:0}, x={8:0}] [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={8:0}, n={8:0}, x={8:0}] [L34] 0 \read(second_thread_id) VAL [\result={0:0}, counter=3, n={8:0}, n={8:0}, x={8:0}] [L34] FCALL, JOIN 2 pthread_join(second_thread_id, NULL) VAL [\result={0:0}, counter=3, n={8:0}, n={8:0}, x={8:0}] [L35] 0 \read(third_thread_id) VAL [\result={0:0}, counter=3, n={8:0}, n={8:0}, x={8:0}] [L35] FCALL, JOIN 3 pthread_join(third_thread_id, NULL) VAL [\result={0:0}, counter=3, n={8:0}, n={8:0}, x={8:0}] [L37] FCALL 0 IdentifierExpression[val] [L37] 0 CodeAnnotStmt[Assertion] VAL [\result={0:0}, counter=3, n={8:0}, n={8:0}, x={8:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 36.0s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 29.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, 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, 24.6s 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, 0.2s 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...