/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/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread/stack-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 07:32:39,538 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 07:32:39,540 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 07:32:39,554 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 07:32:39,554 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 07:32:39,555 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 07:32:39,557 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 07:32:39,559 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 07:32:39,561 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 07:32:39,562 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 07:32:39,565 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 07:32:39,573 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 07:32:39,573 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 07:32:39,574 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 07:32:39,575 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 07:32:39,577 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 07:32:39,578 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 07:32:39,579 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 07:32:39,584 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 07:32:39,589 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 07:32:39,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 07:32:39,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 07:32:39,597 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 07:32:39,598 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 07:32:39,602 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 07:32:39,602 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 07:32:39,602 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 07:32:39,603 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 07:32:39,604 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 07:32:39,604 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 07:32:39,605 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 07:32:39,605 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 07:32:39,607 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 07:32:39,609 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 07:32:39,611 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 07:32:39,612 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 07:32:39,612 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 07:32:39,613 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 07:32:39,613 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 07:32:39,616 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 07:32:39,617 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 07:32:39,618 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf [2020-04-18 07:32:39,647 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 07:32:39,647 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 07:32:39,648 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 07:32:39,648 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 07:32:39,649 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 07:32:39,649 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 07:32:39,649 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 07:32:39,649 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 07:32:39,649 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 07:32:39,650 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 07:32:39,650 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 07:32:39,650 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 07:32:39,651 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 07:32:39,651 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 07:32:39,651 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 07:32:39,651 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 07:32:39,651 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 07:32:39,652 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 07:32:39,652 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 07:32:39,652 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 07:32:39,652 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 07:32:39,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 07:32:39,653 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 07:32:39,653 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 07:32:39,653 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 07:32:39,653 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 07:32:39,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 07:32:39,654 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 07:32:39,654 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 07:32:39,655 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 07:32:39,952 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 07:32:39,968 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 07:32:39,972 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 07:32:39,973 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 07:32:39,973 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 07:32:39,975 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack-2.i [2020-04-18 07:32:40,049 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27a8bd334/d3539214b3a14bd58d5003e197f0c6a1/FLAGfcecae5ab [2020-04-18 07:32:40,609 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 07:32:40,609 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-2.i [2020-04-18 07:32:40,637 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27a8bd334/d3539214b3a14bd58d5003e197f0c6a1/FLAGfcecae5ab [2020-04-18 07:32:40,923 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27a8bd334/d3539214b3a14bd58d5003e197f0c6a1 [2020-04-18 07:32:40,931 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 07:32:40,952 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 07:32:40,953 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 07:32:40,953 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 07:32:40,957 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 07:32:40,958 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:32:40" (1/1) ... [2020-04-18 07:32:40,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13a43c97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:32:40, skipping insertion in model container [2020-04-18 07:32:40,961 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:32:40" (1/1) ... [2020-04-18 07:32:40,969 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 07:32:41,029 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 07:32:41,619 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 07:32:41,640 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 07:32:41,731 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 07:32:41,971 INFO L208 MainTranslator]: Completed translation [2020-04-18 07:32:41,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:32:41 WrapperNode [2020-04-18 07:32:41,972 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 07:32:41,973 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 07:32:41,973 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 07:32:41,973 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 07:32:41,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:32:41" (1/1) ... [2020-04-18 07:32:42,028 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:32:41" (1/1) ... [2020-04-18 07:32:42,080 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 07:32:42,080 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 07:32:42,080 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 07:32:42,081 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 07:32:42,091 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:32:41" (1/1) ... [2020-04-18 07:32:42,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:32:41" (1/1) ... [2020-04-18 07:32:42,095 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:32:41" (1/1) ... [2020-04-18 07:32:42,096 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:32:41" (1/1) ... [2020-04-18 07:32:42,103 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:32:41" (1/1) ... [2020-04-18 07:32:42,112 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:32:41" (1/1) ... [2020-04-18 07:32:42,115 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:32:41" (1/1) ... [2020-04-18 07:32:42,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 07:32:42,119 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 07:32:42,119 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 07:32:42,120 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 07:32:42,121 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:32:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 07:32:42,192 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-04-18 07:32:42,192 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-04-18 07:32:42,192 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-04-18 07:32:42,193 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-04-18 07:32:42,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 07:32:42,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 07:32:42,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-04-18 07:32:42,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 07:32:42,194 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-04-18 07:32:42,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-04-18 07:32:42,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 07:32:42,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 07:32:42,196 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 07:32:42,736 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 07:32:42,736 INFO L295 CfgBuilder]: Removed 26 assume(true) statements. [2020-04-18 07:32:42,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:32:42 BoogieIcfgContainer [2020-04-18 07:32:42,741 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 07:32:42,742 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 07:32:42,742 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 07:32:42,745 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 07:32:42,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:32:40" (1/3) ... [2020-04-18 07:32:42,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@720909e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:32:42, skipping insertion in model container [2020-04-18 07:32:42,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:32:41" (2/3) ... [2020-04-18 07:32:42,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@720909e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:32:42, skipping insertion in model container [2020-04-18 07:32:42,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:32:42" (3/3) ... [2020-04-18 07:32:42,749 INFO L109 eAbstractionObserver]: Analyzing ICFG stack-2.i [2020-04-18 07:32:42,760 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 07:32:42,760 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 07:32:42,768 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-04-18 07:32:42,769 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 07:32:42,802 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,803 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,803 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,803 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,803 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,804 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,804 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,804 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,818 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,819 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,819 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,819 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,819 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,820 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,820 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,820 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,820 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,820 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,821 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,821 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,821 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,821 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,821 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,822 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,822 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,822 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,822 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,823 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,823 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,823 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,823 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,823 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,823 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,824 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,824 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,824 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,824 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,824 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,825 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,825 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,825 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,825 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,826 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,826 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,826 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,826 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,826 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,827 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,827 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,827 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,827 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,828 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,828 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,828 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,828 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,828 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,829 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,829 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,829 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,829 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,830 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,830 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,830 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,830 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,830 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,830 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,831 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,831 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,832 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,832 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,832 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,833 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,833 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,833 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,833 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,833 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,834 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,834 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,834 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,834 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,835 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,835 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,835 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,835 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,836 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,836 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,836 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,836 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,836 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,837 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,837 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,837 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,837 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,837 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,838 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,838 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,838 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,838 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,838 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,839 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,839 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,839 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,839 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,839 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,840 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,840 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,840 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,840 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,840 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,841 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,841 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,841 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,841 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,841 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,842 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,842 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,842 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,842 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,842 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,843 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,843 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,843 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,843 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,844 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,844 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,844 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,844 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,844 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,845 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,845 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,845 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,845 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,846 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,849 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,850 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,850 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,850 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,850 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,850 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,850 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,851 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,851 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,851 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,851 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,851 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,852 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,852 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,852 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,852 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,852 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,853 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,853 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,853 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,853 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,853 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,853 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,859 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,860 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,860 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,860 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,860 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,861 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,861 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,861 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,861 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,861 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,861 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,862 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,862 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,862 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,862 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,862 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,863 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,863 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,863 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:32:42,887 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-04-18 07:32:42,905 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 07:32:42,906 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 07:32:42,906 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 07:32:42,906 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 07:32:42,906 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 07:32:42,906 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 07:32:42,906 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 07:32:42,906 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 07:32:42,925 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 144 places, 149 transitions, 320 flow [2020-04-18 07:32:42,927 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 144 places, 149 transitions, 320 flow [2020-04-18 07:32:43,011 INFO L129 PetriNetUnfolder]: 11/149 cut-off events. [2020-04-18 07:32:43,012 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-04-18 07:32:43,027 INFO L80 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 149 events. 11/149 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 386 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 113. Up to 3 conditions per place. [2020-04-18 07:32:43,036 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 144 places, 149 transitions, 320 flow [2020-04-18 07:32:43,092 INFO L129 PetriNetUnfolder]: 11/149 cut-off events. [2020-04-18 07:32:43,092 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-04-18 07:32:43,095 INFO L80 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 149 events. 11/149 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 386 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 113. Up to 3 conditions per place. [2020-04-18 07:32:43,100 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 6532 [2020-04-18 07:32:43,101 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 07:32:45,742 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2020-04-18 07:32:46,414 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-04-18 07:32:47,075 WARN L192 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 121 [2020-04-18 07:32:47,322 WARN L192 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-04-18 07:32:47,335 INFO L206 etLargeBlockEncoding]: Checked pairs total: 8522 [2020-04-18 07:32:47,335 INFO L214 etLargeBlockEncoding]: Total number of compositions: 130 [2020-04-18 07:32:47,339 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 41 transitions, 104 flow [2020-04-18 07:32:47,367 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 335 states. [2020-04-18 07:32:47,369 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states. [2020-04-18 07:32:47,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-18 07:32:47,376 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:32:47,377 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-04-18 07:32:47,378 INFO L427 AbstractCegarLoop]: === Iteration 1 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:32:47,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:32:47,384 INFO L82 PathProgramCache]: Analyzing trace with hash 913680502, now seen corresponding path program 1 times [2020-04-18 07:32:47,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:32:47,392 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1352956654] [2020-04-18 07:32:47,408 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:32:47,420 INFO L259 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-04-18 07:32:47,422 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2020-04-18 07:32:47,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-18 07:32:47,422 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:32:47,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:32:47,423 INFO L82 PathProgramCache]: Analyzing trace with hash 913680502, now seen corresponding path program 2 times [2020-04-18 07:32:47,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:32:47,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566924748] [2020-04-18 07:32:47,427 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:32:47,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:32:47,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:32:47,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566924748] [2020-04-18 07:32:47,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:32:47,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 07:32:47,643 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:32:47,644 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:32:47,646 INFO L259 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-04-18 07:32:47,646 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:32:47,655 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:32:47,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:32:47,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:32:47,662 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2020-04-18 07:32:47,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:32:47,666 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2020-04-18 07:32:47,666 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2020-04-18 07:32:47,667 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:32:47,667 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1352956654] [2020-04-18 07:32:47,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:32:47,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 07:32:47,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1352956654] [2020-04-18 07:32:47,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 07:32:47,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:32:47,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:32:47,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:32:47,676 INFO L87 Difference]: Start difference. First operand 335 states. Second operand 3 states. [2020-04-18 07:32:47,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:32:47,738 INFO L93 Difference]: Finished difference Result 602 states and 1541 transitions. [2020-04-18 07:32:47,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 07:32:47,740 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-04-18 07:32:47,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:32:47,762 INFO L225 Difference]: With dead ends: 602 [2020-04-18 07:32:47,763 INFO L226 Difference]: Without dead ends: 580 [2020-04-18 07:32:47,764 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:32:47,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2020-04-18 07:32:47,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 427. [2020-04-18 07:32:47,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2020-04-18 07:32:47,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 1148 transitions. [2020-04-18 07:32:47,895 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 1148 transitions. Word has length 6 [2020-04-18 07:32:47,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:32:47,895 INFO L479 AbstractCegarLoop]: Abstraction has 427 states and 1148 transitions. [2020-04-18 07:32:47,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 07:32:47,896 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 1148 transitions. [2020-04-18 07:32:47,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 07:32:47,897 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:32:47,897 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:32:47,898 INFO L427 AbstractCegarLoop]: === Iteration 2 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:32:47,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:32:47,903 INFO L82 PathProgramCache]: Analyzing trace with hash -58751093, now seen corresponding path program 1 times [2020-04-18 07:32:47,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:32:47,904 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [413180824] [2020-04-18 07:32:47,904 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:32:47,905 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 07:32:47,905 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 07:32:47,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 07:32:47,905 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:32:47,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:32:47,906 INFO L82 PathProgramCache]: Analyzing trace with hash -58751093, now seen corresponding path program 2 times [2020-04-18 07:32:47,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:32:47,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026427366] [2020-04-18 07:32:47,907 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:32:47,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:32:48,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:32:48,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026427366] [2020-04-18 07:32:48,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:32:48,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 07:32:48,066 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:32:48,067 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:32:48,068 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 07:32:48,068 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:32:48,071 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:32:48,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:32:48,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:32:48,072 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-04-18 07:32:48,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:32:48,072 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 07:32:48,073 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 07:32:48,073 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:32:48,073 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [413180824] [2020-04-18 07:32:48,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:32:48,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 07:32:48,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [413180824] [2020-04-18 07:32:48,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 07:32:48,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:32:48,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:32:48,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:32:48,075 INFO L87 Difference]: Start difference. First operand 427 states and 1148 transitions. Second operand 3 states. [2020-04-18 07:32:48,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:32:48,097 INFO L93 Difference]: Finished difference Result 530 states and 1370 transitions. [2020-04-18 07:32:48,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 07:32:48,098 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 07:32:48,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:32:48,102 INFO L225 Difference]: With dead ends: 530 [2020-04-18 07:32:48,102 INFO L226 Difference]: Without dead ends: 508 [2020-04-18 07:32:48,104 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:32:48,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2020-04-18 07:32:48,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 468. [2020-04-18 07:32:48,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2020-04-18 07:32:48,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 1250 transitions. [2020-04-18 07:32:48,124 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 1250 transitions. Word has length 8 [2020-04-18 07:32:48,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:32:48,125 INFO L479 AbstractCegarLoop]: Abstraction has 468 states and 1250 transitions. [2020-04-18 07:32:48,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 07:32:48,126 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 1250 transitions. [2020-04-18 07:32:48,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 07:32:48,127 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:32:48,127 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:32:48,127 INFO L427 AbstractCegarLoop]: === Iteration 3 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:32:48,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:32:48,128 INFO L82 PathProgramCache]: Analyzing trace with hash 937555321, now seen corresponding path program 1 times [2020-04-18 07:32:48,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:32:48,128 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [104532288] [2020-04-18 07:32:48,129 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:32:48,129 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-04-18 07:32:48,129 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-04-18 07:32:48,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 07:32:48,130 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:32:48,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:32:48,130 INFO L82 PathProgramCache]: Analyzing trace with hash 937555321, now seen corresponding path program 2 times [2020-04-18 07:32:48,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:32:48,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24039576] [2020-04-18 07:32:48,131 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:32:48,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:32:48,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:32:48,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24039576] [2020-04-18 07:32:48,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:32:48,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 07:32:48,199 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:32:48,200 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:32:48,201 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-04-18 07:32:48,201 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:32:48,204 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:32:48,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:32:48,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:32:48,204 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2020-04-18 07:32:48,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:32:48,207 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2020-04-18 07:32:48,207 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2020-04-18 07:32:48,207 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:32:48,208 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [104532288] [2020-04-18 07:32:48,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:32:48,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 07:32:48,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [104532288] [2020-04-18 07:32:48,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 07:32:48,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:32:48,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:32:48,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:32:48,209 INFO L87 Difference]: Start difference. First operand 468 states and 1250 transitions. Second operand 3 states. [2020-04-18 07:32:48,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:32:48,223 INFO L93 Difference]: Finished difference Result 504 states and 1343 transitions. [2020-04-18 07:32:48,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 07:32:48,224 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-04-18 07:32:48,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:32:48,228 INFO L225 Difference]: With dead ends: 504 [2020-04-18 07:32:48,228 INFO L226 Difference]: Without dead ends: 504 [2020-04-18 07:32:48,228 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:32:48,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2020-04-18 07:32:48,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 504. [2020-04-18 07:32:48,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 504 states. [2020-04-18 07:32:48,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 1343 transitions. [2020-04-18 07:32:48,245 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 1343 transitions. Word has length 10 [2020-04-18 07:32:48,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:32:48,245 INFO L479 AbstractCegarLoop]: Abstraction has 504 states and 1343 transitions. [2020-04-18 07:32:48,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 07:32:48,246 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 1343 transitions. [2020-04-18 07:32:48,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 07:32:48,247 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:32:48,248 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:32:48,248 INFO L427 AbstractCegarLoop]: === Iteration 4 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:32:48,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:32:48,248 INFO L82 PathProgramCache]: Analyzing trace with hash -493457114, now seen corresponding path program 1 times [2020-04-18 07:32:48,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:32:48,249 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1067107626] [2020-04-18 07:32:48,249 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:32:48,250 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 14 transitions. [2020-04-18 07:32:48,250 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-04-18 07:32:48,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 07:32:48,251 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:32:48,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:32:48,251 INFO L82 PathProgramCache]: Analyzing trace with hash -493457114, now seen corresponding path program 2 times [2020-04-18 07:32:48,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:32:48,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223166081] [2020-04-18 07:32:48,252 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:32:48,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:32:48,329 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:32:48,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223166081] [2020-04-18 07:32:48,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135287401] [2020-04-18 07:32:48,331 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 07:32:48,416 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 07:32:48,416 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 07:32:48,418 INFO L264 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2020-04-18 07:32:48,424 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 07:32:48,456 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:32:48,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 07:32:48,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-04-18 07:32:48,457 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:32:48,459 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:32:48,461 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 14 transitions. [2020-04-18 07:32:48,461 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:32:48,494 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:32:48,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 07:32:48,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-04-18 07:32:48,495 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 7 states. [2020-04-18 07:32:48,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:32:48,519 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2020-04-18 07:32:48,519 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2020-04-18 07:32:48,519 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:32:48,519 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1067107626] [2020-04-18 07:32:48,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:32:48,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 07:32:48,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1067107626] [2020-04-18 07:32:48,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 07:32:48,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:32:48,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 07:32:48,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-18 07:32:48,521 INFO L87 Difference]: Start difference. First operand 504 states and 1343 transitions. Second operand 7 states. [2020-04-18 07:32:48,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:32:48,628 INFO L93 Difference]: Finished difference Result 940 states and 2424 transitions. [2020-04-18 07:32:48,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 07:32:48,629 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-04-18 07:32:48,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:32:48,635 INFO L225 Difference]: With dead ends: 940 [2020-04-18 07:32:48,636 INFO L226 Difference]: Without dead ends: 940 [2020-04-18 07:32:48,636 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-18 07:32:48,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2020-04-18 07:32:48,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 688. [2020-04-18 07:32:48,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 688 states. [2020-04-18 07:32:48,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 1842 transitions. [2020-04-18 07:32:48,664 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 1842 transitions. Word has length 14 [2020-04-18 07:32:48,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:32:48,664 INFO L479 AbstractCegarLoop]: Abstraction has 688 states and 1842 transitions. [2020-04-18 07:32:48,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 07:32:48,664 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 1842 transitions. [2020-04-18 07:32:48,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 07:32:48,672 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:32:48,672 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:32:48,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 07:32:48,877 INFO L427 AbstractCegarLoop]: === Iteration 5 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:32:48,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:32:48,877 INFO L82 PathProgramCache]: Analyzing trace with hash 875268143, now seen corresponding path program 1 times [2020-04-18 07:32:48,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:32:48,878 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1774315099] [2020-04-18 07:32:48,879 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:32:48,880 INFO L259 McrAutomatonBuilder]: Finished intersection with 65 states and 112 transitions. [2020-04-18 07:32:48,881 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-04-18 07:32:48,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 07:32:48,882 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:32:48,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:32:48,882 INFO L82 PathProgramCache]: Analyzing trace with hash -615829487, now seen corresponding path program 2 times [2020-04-18 07:32:48,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:32:48,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886990340] [2020-04-18 07:32:48,883 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:32:48,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:32:48,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:32:48,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886990340] [2020-04-18 07:32:48,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:32:48,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 07:32:48,944 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:32:48,946 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:32:48,951 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 52 transitions. [2020-04-18 07:32:48,951 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:32:49,012 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 07:32:49,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 07:32:49,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-04-18 07:32:49,013 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 8 states. [2020-04-18 07:32:49,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:32:49,067 INFO L93 Difference]: Finished difference Result 65 states and 112 transitions. [2020-04-18 07:32:49,067 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 112 transitions. [2020-04-18 07:32:49,068 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:32:49,068 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1774315099] [2020-04-18 07:32:49,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:32:49,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 07:32:49,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1774315099] [2020-04-18 07:32:49,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 07:32:49,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:32:49,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 07:32:49,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-04-18 07:32:49,070 INFO L87 Difference]: Start difference. First operand 688 states and 1842 transitions. Second operand 8 states. [2020-04-18 07:32:49,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:32:49,181 INFO L93 Difference]: Finished difference Result 479 states and 1082 transitions. [2020-04-18 07:32:49,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 07:32:49,181 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2020-04-18 07:32:49,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:32:49,184 INFO L225 Difference]: With dead ends: 479 [2020-04-18 07:32:49,184 INFO L226 Difference]: Without dead ends: 475 [2020-04-18 07:32:49,185 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-04-18 07:32:49,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2020-04-18 07:32:49,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 331. [2020-04-18 07:32:49,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2020-04-18 07:32:49,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 761 transitions. [2020-04-18 07:32:49,195 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 761 transitions. Word has length 16 [2020-04-18 07:32:49,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:32:49,195 INFO L479 AbstractCegarLoop]: Abstraction has 331 states and 761 transitions. [2020-04-18 07:32:49,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 07:32:49,195 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 761 transitions. [2020-04-18 07:32:49,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 07:32:49,196 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:32:49,196 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:32:49,197 INFO L427 AbstractCegarLoop]: === Iteration 6 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:32:49,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:32:49,197 INFO L82 PathProgramCache]: Analyzing trace with hash -623007831, now seen corresponding path program 1 times [2020-04-18 07:32:49,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:32:49,197 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [714999461] [2020-04-18 07:32:49,198 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:32:49,199 INFO L259 McrAutomatonBuilder]: Finished intersection with 72 states and 125 transitions. [2020-04-18 07:32:49,200 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2020-04-18 07:32:49,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 07:32:49,201 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:32:49,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:32:49,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1910844343, now seen corresponding path program 2 times [2020-04-18 07:32:49,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:32:49,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821338755] [2020-04-18 07:32:49,202 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:32:49,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:32:49,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:32:49,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821338755] [2020-04-18 07:32:49,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:32:49,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 07:32:49,250 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:32:49,252 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:32:49,258 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 55 transitions. [2020-04-18 07:32:49,259 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:32:49,309 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 07:32:49,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 07:32:49,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-04-18 07:32:49,310 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 8 states. [2020-04-18 07:32:49,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:32:49,377 INFO L93 Difference]: Finished difference Result 75 states and 127 transitions. [2020-04-18 07:32:49,377 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 127 transitions. [2020-04-18 07:32:49,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 07:32:49,378 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 07:32:49,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:32:49,378 INFO L82 PathProgramCache]: Analyzing trace with hash -623007831, now seen corresponding path program 3 times [2020-04-18 07:32:49,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:32:49,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31116453] [2020-04-18 07:32:49,379 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:32:49,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:32:49,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:32:49,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31116453] [2020-04-18 07:32:49,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:32:49,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 07:32:49,506 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:32:49,509 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:32:49,515 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 61 transitions. [2020-04-18 07:32:49,516 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:32:49,558 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 07:32:49,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 07:32:49,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-04-18 07:32:49,558 INFO L87 Difference]: Start difference. First operand 75 states and 127 transitions. Second operand 5 states. [2020-04-18 07:32:49,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:32:49,585 INFO L93 Difference]: Finished difference Result 81 states and 134 transitions. [2020-04-18 07:32:49,585 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 134 transitions. [2020-04-18 07:32:49,586 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:32:49,586 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [714999461] [2020-04-18 07:32:49,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:32:49,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 07:32:49,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [714999461] [2020-04-18 07:32:49,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 07:32:49,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:32:49,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 07:32:49,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-04-18 07:32:49,588 INFO L87 Difference]: Start difference. First operand 331 states and 761 transitions. Second operand 11 states. [2020-04-18 07:32:49,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:32:49,884 INFO L93 Difference]: Finished difference Result 611 states and 1370 transitions. [2020-04-18 07:32:49,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 07:32:49,885 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 17 [2020-04-18 07:32:49,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:32:49,889 INFO L225 Difference]: With dead ends: 611 [2020-04-18 07:32:49,889 INFO L226 Difference]: Without dead ends: 594 [2020-04-18 07:32:49,889 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2020-04-18 07:32:49,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2020-04-18 07:32:49,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 352. [2020-04-18 07:32:49,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2020-04-18 07:32:49,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 795 transitions. [2020-04-18 07:32:49,901 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 795 transitions. Word has length 17 [2020-04-18 07:32:49,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:32:49,902 INFO L479 AbstractCegarLoop]: Abstraction has 352 states and 795 transitions. [2020-04-18 07:32:49,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 07:32:49,902 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 795 transitions. [2020-04-18 07:32:49,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 07:32:49,903 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:32:49,904 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:32:49,904 INFO L427 AbstractCegarLoop]: === Iteration 7 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:32:49,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:32:49,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1134249582, now seen corresponding path program 1 times [2020-04-18 07:32:49,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:32:49,905 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [86768574] [2020-04-18 07:32:49,906 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:32:49,910 INFO L259 McrAutomatonBuilder]: Finished intersection with 112 states and 201 transitions. [2020-04-18 07:32:49,911 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states. [2020-04-18 07:32:49,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 07:32:49,912 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:32:49,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:32:49,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1324660238, now seen corresponding path program 2 times [2020-04-18 07:32:49,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:32:49,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002497100] [2020-04-18 07:32:49,913 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:32:49,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:32:49,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:32:49,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002497100] [2020-04-18 07:32:49,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:32:49,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 07:32:49,980 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:32:49,982 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:32:49,995 INFO L259 McrAutomatonBuilder]: Finished intersection with 49 states and 75 transitions. [2020-04-18 07:32:49,996 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:32:50,005 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 07:32:50,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 07:32:50,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 07:32:50,006 INFO L87 Difference]: Start difference. First operand 112 states. Second operand 4 states. [2020-04-18 07:32:50,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:32:50,029 INFO L93 Difference]: Finished difference Result 130 states and 228 transitions. [2020-04-18 07:32:50,029 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 228 transitions. [2020-04-18 07:32:50,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 07:32:50,030 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 07:32:50,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:32:50,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1665379662, now seen corresponding path program 3 times [2020-04-18 07:32:50,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:32:50,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183276931] [2020-04-18 07:32:50,031 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:32:50,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:32:50,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:32:50,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183276931] [2020-04-18 07:32:50,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:32:50,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 07:32:50,083 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:32:50,087 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:32:50,093 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 49 transitions. [2020-04-18 07:32:50,094 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:32:50,111 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 07:32:50,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 07:32:50,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 07:32:50,113 INFO L87 Difference]: Start difference. First operand 130 states and 228 transitions. Second operand 4 states. [2020-04-18 07:32:50,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:32:50,129 INFO L93 Difference]: Finished difference Result 137 states and 234 transitions. [2020-04-18 07:32:50,130 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 234 transitions. [2020-04-18 07:32:50,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 07:32:50,130 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 07:32:50,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:32:50,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1134249582, now seen corresponding path program 4 times [2020-04-18 07:32:50,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:32:50,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272142952] [2020-04-18 07:32:50,131 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:32:50,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:32:50,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:32:50,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272142952] [2020-04-18 07:32:50,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:32:50,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-04-18 07:32:50,605 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:32:50,608 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:32:50,614 INFO L259 McrAutomatonBuilder]: Finished intersection with 44 states and 65 transitions. [2020-04-18 07:32:50,614 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:32:50,921 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 15 times. [2020-04-18 07:32:50,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 07:32:50,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2020-04-18 07:32:50,922 INFO L87 Difference]: Start difference. First operand 137 states and 234 transitions. Second operand 14 states. [2020-04-18 07:32:52,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:32:52,503 INFO L93 Difference]: Finished difference Result 168 states and 280 transitions. [2020-04-18 07:32:52,503 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 280 transitions. [2020-04-18 07:32:52,504 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:32:52,504 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [86768574] [2020-04-18 07:32:52,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:32:52,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-04-18 07:32:52,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [86768574] [2020-04-18 07:32:52,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-04-18 07:32:52,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:32:52,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-04-18 07:32:52,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=828, Unknown=0, NotChecked=0, Total=992 [2020-04-18 07:32:52,506 INFO L87 Difference]: Start difference. First operand 352 states and 795 transitions. Second operand 18 states. [2020-04-18 07:32:54,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:32:54,678 INFO L93 Difference]: Finished difference Result 885 states and 1956 transitions. [2020-04-18 07:32:54,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-04-18 07:32:54,678 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 21 [2020-04-18 07:32:54,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:32:54,684 INFO L225 Difference]: With dead ends: 885 [2020-04-18 07:32:54,684 INFO L226 Difference]: Without dead ends: 854 [2020-04-18 07:32:54,686 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=444, Invalid=2312, Unknown=0, NotChecked=0, Total=2756 [2020-04-18 07:32:54,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2020-04-18 07:32:54,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 446. [2020-04-18 07:32:54,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2020-04-18 07:32:54,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 1011 transitions. [2020-04-18 07:32:54,708 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 1011 transitions. Word has length 21 [2020-04-18 07:32:54,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:32:54,708 INFO L479 AbstractCegarLoop]: Abstraction has 446 states and 1011 transitions. [2020-04-18 07:32:54,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-04-18 07:32:54,709 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 1011 transitions. [2020-04-18 07:32:54,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-04-18 07:32:54,712 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:32:54,712 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-04-18 07:32:54,713 INFO L427 AbstractCegarLoop]: === Iteration 8 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:32:54,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:32:54,713 INFO L82 PathProgramCache]: Analyzing trace with hash -730101290, now seen corresponding path program 3 times [2020-04-18 07:32:54,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:32:54,713 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1666247550] [2020-04-18 07:32:54,714 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:32:54,714 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 22 transitions. [2020-04-18 07:32:54,715 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-04-18 07:32:54,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-04-18 07:32:54,715 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:32:54,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:32:54,716 INFO L82 PathProgramCache]: Analyzing trace with hash -730101290, now seen corresponding path program 4 times [2020-04-18 07:32:54,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:32:54,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591230103] [2020-04-18 07:32:54,716 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:32:54,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:32:54,791 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:32:54,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591230103] [2020-04-18 07:32:54,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872242889] [2020-04-18 07:32:54,792 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 07:32:54,876 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 07:32:54,877 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 07:32:54,878 INFO L264 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 07:32:54,881 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 07:32:54,899 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:32:54,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 07:32:54,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-04-18 07:32:54,900 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:32:54,903 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:32:54,907 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 22 transitions. [2020-04-18 07:32:54,907 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:32:54,944 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:32:54,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 07:32:54,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-04-18 07:32:54,945 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 9 states. [2020-04-18 07:32:54,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:32:54,995 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2020-04-18 07:32:54,996 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2020-04-18 07:32:54,996 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:32:54,996 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1666247550] [2020-04-18 07:32:54,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:32:54,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 07:32:54,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1666247550] [2020-04-18 07:32:54,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 07:32:54,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:32:54,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 07:32:54,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-04-18 07:32:54,998 INFO L87 Difference]: Start difference. First operand 446 states and 1011 transitions. Second operand 9 states. [2020-04-18 07:32:55,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:32:55,062 INFO L93 Difference]: Finished difference Result 789 states and 1751 transitions. [2020-04-18 07:32:55,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 07:32:55,064 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-04-18 07:32:55,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:32:55,068 INFO L225 Difference]: With dead ends: 789 [2020-04-18 07:32:55,068 INFO L226 Difference]: Without dead ends: 789 [2020-04-18 07:32:55,069 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-04-18 07:32:55,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2020-04-18 07:32:55,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 562. [2020-04-18 07:32:55,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 562 states. [2020-04-18 07:32:55,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 1293 transitions. [2020-04-18 07:32:55,087 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 1293 transitions. Word has length 22 [2020-04-18 07:32:55,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:32:55,087 INFO L479 AbstractCegarLoop]: Abstraction has 562 states and 1293 transitions. [2020-04-18 07:32:55,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 07:32:55,087 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 1293 transitions. [2020-04-18 07:32:55,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-04-18 07:32:55,088 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:32:55,088 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:32:55,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 07:32:55,296 INFO L427 AbstractCegarLoop]: === Iteration 9 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:32:55,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:32:55,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1923020665, now seen corresponding path program 1 times [2020-04-18 07:32:55,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:32:55,298 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [553702987] [2020-04-18 07:32:55,298 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:32:55,300 INFO L259 McrAutomatonBuilder]: Finished intersection with 142 states and 258 transitions. [2020-04-18 07:32:55,301 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states. [2020-04-18 07:32:55,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-04-18 07:32:55,301 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:32:55,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:32:55,302 INFO L82 PathProgramCache]: Analyzing trace with hash -787087495, now seen corresponding path program 2 times [2020-04-18 07:32:55,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:32:55,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344670431] [2020-04-18 07:32:55,302 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:32:55,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:32:55,335 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-04-18 07:32:55,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344670431] [2020-04-18 07:32:55,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:32:55,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 07:32:55,336 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:32:55,339 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:32:55,348 INFO L259 McrAutomatonBuilder]: Finished intersection with 51 states and 76 transitions. [2020-04-18 07:32:55,348 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:32:55,357 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 07:32:55,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 07:32:55,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 07:32:55,358 INFO L87 Difference]: Start difference. First operand 142 states. Second operand 4 states. [2020-04-18 07:32:55,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:32:55,386 INFO L93 Difference]: Finished difference Result 169 states and 300 transitions. [2020-04-18 07:32:55,386 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 300 transitions. [2020-04-18 07:32:55,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-04-18 07:32:55,387 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 07:32:55,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:32:55,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1270389585, now seen corresponding path program 3 times [2020-04-18 07:32:55,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:32:55,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443736262] [2020-04-18 07:32:55,388 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:32:55,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:32:55,433 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 07:32:55,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443736262] [2020-04-18 07:32:55,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:32:55,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 07:32:55,434 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:32:55,437 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:32:55,443 INFO L259 McrAutomatonBuilder]: Finished intersection with 31 states and 36 transitions. [2020-04-18 07:32:55,443 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:32:55,457 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 07:32:55,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 07:32:55,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 07:32:55,458 INFO L87 Difference]: Start difference. First operand 169 states and 300 transitions. Second operand 4 states. [2020-04-18 07:32:55,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:32:55,474 INFO L93 Difference]: Finished difference Result 190 states and 326 transitions. [2020-04-18 07:32:55,474 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 326 transitions. [2020-04-18 07:32:55,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-04-18 07:32:55,475 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 07:32:55,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:32:55,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1923020665, now seen corresponding path program 4 times [2020-04-18 07:32:55,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:32:55,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497154440] [2020-04-18 07:32:55,476 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:32:55,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 07:32:55,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 07:32:55,573 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-18 07:32:55,576 INFO L174 FreeRefinementEngine]: Strategy MCR found a feasible trace [2020-04-18 07:32:55,577 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-18 07:32:55,578 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-04-18 07:32:55,578 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-04-18 07:32:55,587 WARN L123 codingBacktranslator]: Skipped backtranslation of ATE [572] [572] L4-->L978-1: Formula: (and (not (= t1Thread1of1ForFork0_assume_abort_if_not_~cond_In-2129159804 0)) (let ((.cse0 (mod t1Thread1of1ForFork0_~tmp~0_In-2129159804 4294967296))) (let ((.cse1 (<= .cse0 2147483647))) (or (and (= .cse0 |t1Thread1of1ForFork0_push_#in~x_Out-2129159804|) .cse1) (and (= (+ .cse0 (- 4294967296)) |t1Thread1of1ForFork0_push_#in~x_Out-2129159804|) (not .cse1))))) (= |t1Thread1of1ForFork0_push_#in~stack.base_Out-2129159804| |~#arr~0.base_In-2129159804|) (= |~#arr~0.offset_In-2129159804| |t1Thread1of1ForFork0_push_#in~stack.offset_Out-2129159804|)) InVars {~#arr~0.offset=|~#arr~0.offset_In-2129159804|, t1Thread1of1ForFork0_assume_abort_if_not_~cond=t1Thread1of1ForFork0_assume_abort_if_not_~cond_In-2129159804, t1Thread1of1ForFork0_~tmp~0=t1Thread1of1ForFork0_~tmp~0_In-2129159804, ~#arr~0.base=|~#arr~0.base_In-2129159804|} OutVars{t1Thread1of1ForFork0_push_#in~x=|t1Thread1of1ForFork0_push_#in~x_Out-2129159804|, ~#arr~0.offset=|~#arr~0.offset_In-2129159804|, t1Thread1of1ForFork0_assume_abort_if_not_~cond=t1Thread1of1ForFork0_assume_abort_if_not_~cond_In-2129159804, t1Thread1of1ForFork0_push_#in~stack.base=|t1Thread1of1ForFork0_push_#in~stack.base_Out-2129159804|, t1Thread1of1ForFork0_~tmp~0=t1Thread1of1ForFork0_~tmp~0_In-2129159804, t1Thread1of1ForFork0_push_#res=|t1Thread1of1ForFork0_push_#res_Out-2129159804|, t1Thread1of1ForFork0_push_#in~stack.offset=|t1Thread1of1ForFork0_push_#in~stack.offset_Out-2129159804|, ~#arr~0.base=|~#arr~0.base_In-2129159804|} AuxVars[] AssignedVars[t1Thread1of1ForFork0_push_#in~x, t1Thread1of1ForFork0_push_#in~stack.base, t1Thread1of1ForFork0_push_#res, t1Thread1of1ForFork0_push_#in~stack.offset] because there is no mapped edge [2020-04-18 07:32:55,595 WARN L123 codingBacktranslator]: Skipped backtranslation of ATE [582] [582] L993-3-->L988-6: Formula: (and (<= |t2Thread1of1ForFork1_#t~ret47_In1428160691| 2147483647) (<= 0 (+ |t2Thread1of1ForFork1_#t~ret47_In1428160691| 2147483648)) (= t2Thread1of1ForFork1_~i~1_Out1428160691 (+ t2Thread1of1ForFork1_~i~1_In1428160691 1)) (not (= (- 2) |t2Thread1of1ForFork1_#t~ret47_In1428160691|)) (= |#pthreadsMutex_Out1428160691| (store |#pthreadsMutex_In1428160691| |~#m~0.base_In1428160691| (store (select |#pthreadsMutex_In1428160691| |~#m~0.base_In1428160691|) |~#m~0.offset_In1428160691| 0)))) InVars {#pthreadsMutex=|#pthreadsMutex_In1428160691|, ~#m~0.base=|~#m~0.base_In1428160691|, t2Thread1of1ForFork1_#t~ret47=|t2Thread1of1ForFork1_#t~ret47_In1428160691|, ~#m~0.offset=|~#m~0.offset_In1428160691|, t2Thread1of1ForFork1_~i~1=t2Thread1of1ForFork1_~i~1_In1428160691} OutVars{#pthreadsMutex=|#pthreadsMutex_Out1428160691|, t2Thread1of1ForFork1_#t~ret47=|t2Thread1of1ForFork1_#t~ret47_Out1428160691|, ~#m~0.base=|~#m~0.base_In1428160691|, ~#m~0.offset=|~#m~0.offset_In1428160691|, t2Thread1of1ForFork1_#t~post45=|t2Thread1of1ForFork1_#t~post45_Out1428160691|, t2Thread1of1ForFork1_~i~1=t2Thread1of1ForFork1_~i~1_Out1428160691} AuxVars[] AssignedVars[#pthreadsMutex, t2Thread1of1ForFork1_#t~ret47, t2Thread1of1ForFork1_#t~post45, t2Thread1of1ForFork1_~i~1] because there is no mapped edge [2020-04-18 07:32:55,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 07:32:55 BasicIcfg [2020-04-18 07:32:55,664 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 07:32:55,668 INFO L168 Benchmark]: Toolchain (without parser) took 14733.69 ms. Allocated memory was 137.9 MB in the beginning and 367.0 MB in the end (delta: 229.1 MB). Free memory was 99.6 MB in the beginning and 180.9 MB in the end (delta: -81.3 MB). Peak memory consumption was 147.8 MB. Max. memory is 7.1 GB. [2020-04-18 07:32:55,673 INFO L168 Benchmark]: CDTParser took 1.36 ms. Allocated memory is still 137.9 MB. Free memory was 119.8 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-04-18 07:32:55,675 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1019.44 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 97.7 MB in the beginning and 132.1 MB in the end (delta: -34.4 MB). Peak memory consumption was 34.2 MB. Max. memory is 7.1 GB. [2020-04-18 07:32:55,675 INFO L168 Benchmark]: Boogie Procedure Inliner took 107.36 ms. Allocated memory is still 201.3 MB. Free memory was 132.1 MB in the beginning and 129.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-04-18 07:32:55,676 INFO L168 Benchmark]: Boogie Preprocessor took 38.74 ms. Allocated memory is still 201.3 MB. Free memory was 129.3 MB in the beginning and 127.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-18 07:32:55,676 INFO L168 Benchmark]: RCFGBuilder took 621.45 ms. Allocated memory is still 201.3 MB. Free memory was 127.3 MB in the beginning and 93.7 MB in the end (delta: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 7.1 GB. [2020-04-18 07:32:55,677 INFO L168 Benchmark]: TraceAbstraction took 12922.66 ms. Allocated memory was 201.3 MB in the beginning and 367.0 MB in the end (delta: 165.7 MB). Free memory was 93.0 MB in the beginning and 180.9 MB in the end (delta: -87.9 MB). Peak memory consumption was 77.8 MB. Max. memory is 7.1 GB. [2020-04-18 07:32:55,685 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.36 ms. Allocated memory is still 137.9 MB. Free memory was 119.8 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1019.44 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 97.7 MB in the beginning and 132.1 MB in the end (delta: -34.4 MB). Peak memory consumption was 34.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 107.36 ms. Allocated memory is still 201.3 MB. Free memory was 132.1 MB in the beginning and 129.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 38.74 ms. Allocated memory is still 201.3 MB. Free memory was 129.3 MB in the beginning and 127.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 621.45 ms. Allocated memory is still 201.3 MB. Free memory was 127.3 MB in the beginning and 93.7 MB in the end (delta: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12922.66 ms. Allocated memory was 201.3 MB in the beginning and 367.0 MB in the end (delta: 165.7 MB). Free memory was 93.0 MB in the beginning and 180.9 MB in the end (delta: -87.9 MB). Peak memory consumption was 77.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 4.4s, 144 ProgramPointsBefore, 40 ProgramPointsAfterwards, 149 TransitionsBefore, 41 TransitionsAfterwards, 6532 CoEnabledTransitionPairs, 8 FixpointIterations, 30 TrivialSequentialCompositions, 78 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 22 ConcurrentYvCompositions, 4 ChoiceCompositions, 3601 VarBasedMoverChecksPositive, 65 VarBasedMoverChecksNegative, 30 SemBasedMoverChecksPositive, 56 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 0 MoverChecksTotal, 8522 CheckedPairsTotal, 130 TotalNumberOfCompositions - CounterExampleResult [Line: 922]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L916] 0 static int top=0; [L917] 0 static unsigned int arr[(5)]; [L918] 0 pthread_mutex_t m; [L919] 0 _Bool flag=(0); [L1002] 0 pthread_t id1, id2; [L1004] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [arr={3:0}, flag=0, m={9:0}, top=0] [L971] 1 int i; [L972] 1 unsigned int tmp; [L973] 1 i=0 VAL [arr={3:0}, flag=0, m={9:0}, top=0] [L1005] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [arr={3:0}, flag=0, m={9:0}, top=0] [L987] 2 int i; [L988] 2 i=0 VAL [arr={3:0}, flag=0, m={9:0}, top=0] [L973] COND TRUE 1 i<(5) [L976] 1 tmp = __VERIFIER_nondet_uint() [L943] COND FALSE 1 !(top==(5)) [L935] 1 return top; [L950] 1 stack[get_top()] = x VAL [arr={3:0}, flag=0, m={9:0}, top=0] [L927] 1 top++ [L953] 1 return 0; [L978] COND FALSE 1 !(push(arr,tmp)==(-1)) [L980] 1 flag=(1) VAL [arr={3:0}, flag=1, m={9:0}, top=1] [L973] 1 i++ VAL [arr={3:0}, flag=1, m={9:0}, top=1] [L988] COND TRUE 2 i<(5) [L991] COND TRUE 2 \read(flag) [L935] 2 return top; VAL [arr={3:0}, flag=1, m={9:0}, top=1] [L957] COND FALSE 2 !(get_top()==0) [L931] 2 top-- VAL [arr={3:0}, flag=1, m={9:0}, top=0] [L935] 2 return top; [L965] EXPR 2 stack[get_top()] [L965] 2 return stack[get_top()]; [L988] COND TRUE 2 i<(5) [L991] COND TRUE 2 \read(flag) [L935] 2 return top; [L957] COND TRUE 2 get_top()==0 [L960] 2 return (-2); [L993] COND TRUE 2 !(pop(arr)!=(-2)) [L922] 2 __VERIFIER_error() VAL [arr={3:0}, flag=1, m={9:0}, top=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 138 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.6s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.4s, HoareTripleCheckerStatistics: 405 SDtfs, 831 SDslu, 1582 SDs, 0 SdLazy, 1189 SolverSat, 135 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 294 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 668 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=688occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 1466 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...