/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/brs3f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 13:51:19,999 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 13:51:20,003 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 13:51:20,062 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 13:51:20,063 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 13:51:20,067 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 13:51:20,071 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 13:51:20,079 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 13:51:20,082 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 13:51:20,089 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 13:51:20,090 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 13:51:20,092 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 13:51:20,093 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 13:51:20,095 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 13:51:20,097 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 13:51:20,100 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 13:51:20,116 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 13:51:20,118 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 13:51:20,126 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 13:51:20,133 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 13:51:20,136 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 13:51:20,138 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 13:51:20,140 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 13:51:20,143 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 13:51:20,152 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 13:51:20,166 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 13:51:20,167 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 13:51:20,168 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 13:51:20,174 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-02-23 13:51:20,231 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 13:51:20,231 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 13:51:20,238 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-23 13:51:20,238 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-23 13:51:20,238 INFO L138 SettingsManager]: * Use SBE=true [2021-02-23 13:51:20,238 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 13:51:20,239 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 13:51:20,239 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 13:51:20,239 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 13:51:20,240 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 13:51:20,241 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 13:51:20,241 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 13:51:20,241 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 13:51:20,242 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 13:51:20,242 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 13:51:20,242 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 13:51:20,242 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 13:51:20,242 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 13:51:20,243 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-23 13:51:20,243 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 13:51:20,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 13:51:20,244 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 13:51:20,244 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-23 13:51:20,244 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-23 13:51:20,244 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-23 13:51:20,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-23 13:51:20,245 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 13:51:20,245 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-23 13:51:20,245 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 13:51:20,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 13:51:20,692 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 13:51:20,695 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 13:51:20,697 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 13:51:20,698 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 13:51:20,699 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs3f.c [2021-02-23 13:51:20,785 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34a279738/eda49084075a4d7e91411b060c41f061/FLAG5f3c19d1e [2021-02-23 13:51:21,537 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 13:51:21,538 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/brs3f.c [2021-02-23 13:51:21,547 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34a279738/eda49084075a4d7e91411b060c41f061/FLAG5f3c19d1e [2021-02-23 13:51:21,878 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34a279738/eda49084075a4d7e91411b060c41f061 [2021-02-23 13:51:21,882 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 13:51:21,896 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 13:51:21,898 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 13:51:21,898 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 13:51:21,903 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 13:51:21,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:51:21" (1/1) ... [2021-02-23 13:51:21,905 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@406d052e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:21, skipping insertion in model container [2021-02-23 13:51:21,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:51:21" (1/1) ... [2021-02-23 13:51:21,914 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 13:51:21,932 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 13:51:22,092 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/brs3f.c[588,601] [2021-02-23 13:51:22,110 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:51:22,119 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 13:51:22,132 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/brs3f.c[588,601] [2021-02-23 13:51:22,141 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:51:22,157 INFO L208 MainTranslator]: Completed translation [2021-02-23 13:51:22,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:22 WrapperNode [2021-02-23 13:51:22,158 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 13:51:22,159 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 13:51:22,159 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 13:51:22,160 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 13:51:22,171 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:22" (1/1) ... [2021-02-23 13:51:22,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:22" (1/1) ... [2021-02-23 13:51:22,179 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:22" (1/1) ... [2021-02-23 13:51:22,180 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:22" (1/1) ... [2021-02-23 13:51:22,189 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:22" (1/1) ... [2021-02-23 13:51:22,194 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:22" (1/1) ... [2021-02-23 13:51:22,196 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:22" (1/1) ... [2021-02-23 13:51:22,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 13:51:22,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 13:51:22,200 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 13:51:22,201 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 13:51:22,202 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:22" (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 [2021-02-23 13:51:22,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 13:51:22,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 13:51:22,308 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 13:51:22,308 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-23 13:51:22,308 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 13:51:22,309 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 13:51:22,309 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 13:51:22,309 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 13:51:22,309 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 13:51:22,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 13:51:22,309 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-23 13:51:22,310 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 13:51:22,310 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 13:51:22,310 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 13:51:22,310 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 13:51:22,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 13:51:22,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 13:51:22,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 13:51:22,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 13:51:22,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 13:51:22,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 13:51:22,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 13:51:22,753 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 13:51:22,753 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-23 13:51:22,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:51:22 BoogieIcfgContainer [2021-02-23 13:51:22,756 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 13:51:22,764 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 13:51:22,765 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 13:51:22,772 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 13:51:22,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 01:51:21" (1/3) ... [2021-02-23 13:51:22,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36327081 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:51:22, skipping insertion in model container [2021-02-23 13:51:22,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:22" (2/3) ... [2021-02-23 13:51:22,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36327081 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:51:22, skipping insertion in model container [2021-02-23 13:51:22,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:51:22" (3/3) ... [2021-02-23 13:51:22,779 INFO L111 eAbstractionObserver]: Analyzing ICFG brs3f.c [2021-02-23 13:51:22,800 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-23 13:51:22,812 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 13:51:22,850 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 13:51:22,896 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 13:51:22,896 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 13:51:22,896 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-23 13:51:22,896 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 13:51:22,896 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 13:51:22,897 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 13:51:22,897 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 13:51:22,897 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 13:51:22,926 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2021-02-23 13:51:22,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-02-23 13:51:22,934 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:51:22,935 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:51:22,937 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:51:22,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:51:22,947 INFO L82 PathProgramCache]: Analyzing trace with hash 816154861, now seen corresponding path program 1 times [2021-02-23 13:51:22,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:51:22,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219719135] [2021-02-23 13:51:22,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:51:23,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:23,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:23,244 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:23,246 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:23,247 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:23,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:51:23,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:23,404 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:23,405 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:23,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-23 13:51:23,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:23,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:23,419 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:23,420 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:23,421 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:23,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 13:51:23,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219719135] [2021-02-23 13:51:23,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:51:23,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 13:51:23,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473237311] [2021-02-23 13:51:23,442 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 13:51:23,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:51:23,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 13:51:23,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 13:51:23,464 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2021-02-23 13:51:23,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:51:23,609 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2021-02-23 13:51:23,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 13:51:23,611 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2021-02-23 13:51:23,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:51:23,620 INFO L225 Difference]: With dead ends: 56 [2021-02-23 13:51:23,620 INFO L226 Difference]: Without dead ends: 26 [2021-02-23 13:51:23,624 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 13:51:23,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-02-23 13:51:23,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-02-23 13:51:23,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-02-23 13:51:23,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2021-02-23 13:51:23,670 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 21 [2021-02-23 13:51:23,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:51:23,671 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2021-02-23 13:51:23,671 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 13:51:23,671 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2021-02-23 13:51:23,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-02-23 13:51:23,672 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:51:23,672 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:51:23,673 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 13:51:23,673 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:51:23,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:51:23,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1231644863, now seen corresponding path program 1 times [2021-02-23 13:51:23,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:51:23,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504330047] [2021-02-23 13:51:23,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:51:23,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:23,730 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:23,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:23,732 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:23,732 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:51:23,741 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:23,742 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:51:23,751 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:23,752 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:23,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:51:23,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:23,791 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:23,792 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:23,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-23 13:51:23,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:23,800 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:23,801 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:23,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 13:51:23,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504330047] [2021-02-23 13:51:23,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:51:23,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 13:51:23,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255269054] [2021-02-23 13:51:23,806 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 13:51:23,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:51:23,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 13:51:23,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-23 13:51:23,807 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 5 states. [2021-02-23 13:51:23,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:51:23,931 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2021-02-23 13:51:23,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 13:51:23,932 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2021-02-23 13:51:23,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:51:23,934 INFO L225 Difference]: With dead ends: 45 [2021-02-23 13:51:23,934 INFO L226 Difference]: Without dead ends: 32 [2021-02-23 13:51:23,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-02-23 13:51:23,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-02-23 13:51:23,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2021-02-23 13:51:23,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-02-23 13:51:23,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2021-02-23 13:51:23,950 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 21 [2021-02-23 13:51:23,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:51:23,950 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2021-02-23 13:51:23,950 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 13:51:23,950 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2021-02-23 13:51:23,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-02-23 13:51:23,953 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:51:23,953 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:51:23,953 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 13:51:23,953 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:51:23,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:51:23,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1305126266, now seen corresponding path program 1 times [2021-02-23 13:51:23,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:51:23,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836153175] [2021-02-23 13:51:23,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:51:24,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:24,051 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,052 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,053 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,053 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:51:24,058 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,059 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 13:51:24,070 WARN L141 QuantifierPusher]: treesize reduction 6, result has 68.4 percent of original size [2021-02-23 13:51:24,071 WARN L147 QuantifierPusher]: treesize reduction 6, result has 68.4 percent of original size 13 [2021-02-23 13:51:24,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,083 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 13:51:24,090 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,091 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 13:51:24,099 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,099 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:51:24,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:24,141 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,142 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-23 13:51:24,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:24,149 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,175 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-23 13:51:24,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836153175] [2021-02-23 13:51:24,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:51:24,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-23 13:51:24,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762144232] [2021-02-23 13:51:24,177 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-23 13:51:24,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:51:24,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-23 13:51:24,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-02-23 13:51:24,178 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 8 states. [2021-02-23 13:51:24,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:51:24,400 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2021-02-23 13:51:24,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-23 13:51:24,401 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2021-02-23 13:51:24,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:51:24,402 INFO L225 Difference]: With dead ends: 39 [2021-02-23 13:51:24,402 INFO L226 Difference]: Without dead ends: 33 [2021-02-23 13:51:24,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-02-23 13:51:24,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-02-23 13:51:24,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2021-02-23 13:51:24,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2021-02-23 13:51:24,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2021-02-23 13:51:24,411 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 27 [2021-02-23 13:51:24,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:51:24,412 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2021-02-23 13:51:24,412 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-23 13:51:24,412 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2021-02-23 13:51:24,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-02-23 13:51:24,413 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:51:24,413 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:51:24,414 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 13:51:24,414 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:51:24,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:51:24,415 INFO L82 PathProgramCache]: Analyzing trace with hash -455123849, now seen corresponding path program 1 times [2021-02-23 13:51:24,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:51:24,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099118335] [2021-02-23 13:51:24,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:51:24,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:24,464 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,466 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,466 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:51:24,470 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,470 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:51:24,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:51:24,479 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,480 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:51:24,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:51:24,494 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:51:24,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:24,529 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,530 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-23 13:51:24,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:24,534 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,534 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,537 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 13:51:24,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099118335] [2021-02-23 13:51:24,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590778447] [2021-02-23 13:51:24,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2021-02-23 13:51:24,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:24,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 6 conjunts are in the unsatisfiable core [2021-02-23 13:51:24,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-23 13:51:24,628 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,629 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,629 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,630 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,630 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,631 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,631 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,632 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,633 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,634 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,634 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,635 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,635 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,636 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,636 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,637 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,637 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,638 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,639 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,639 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,640 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,640 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,641 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,641 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,643 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,643 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,644 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,644 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,645 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,645 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,646 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,646 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,647 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,648 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,648 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,649 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,649 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,650 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,650 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,651 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,651 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,652 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,652 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,653 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,654 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,654 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,655 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,655 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,656 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,656 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,657 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,657 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,657 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,658 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,659 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,659 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,660 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,661 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,661 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,662 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,662 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,663 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,663 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,664 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,664 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,665 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,665 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,666 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,666 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,667 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,667 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,668 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,669 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,669 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,670 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,670 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,672 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,675 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,675 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,676 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,677 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,677 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,678 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,679 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,679 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:51:24,680 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,681 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:51:24,681 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,682 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:51:24,682 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,682 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:51:24,693 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:51:24,696 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,696 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:51:24,698 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,699 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:51:24,699 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:51:24,702 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,702 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:51:24,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:51:24,705 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,705 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:51:24,706 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,706 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:51:24,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 13:51:24,729 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,731 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 13:51:24,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 13:51:24,734 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 13:51:24,736 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,737 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 13:51:24,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 13:51:24,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,751 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 13:51:24,753 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,754 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:51:24,755 WARN L141 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-02-23 13:51:24,760 WARN L147 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size 7 [2021-02-23 13:51:24,767 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 13:51:24,770 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,775 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:51:24,777 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 13:51:24,780 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,783 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 13:51:24,785 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,786 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:51:24,787 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,794 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:51:24,796 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,813 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:51:24,816 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,817 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:51:24,820 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,822 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:51:24,835 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,835 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:51:24,836 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,837 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:51:24,838 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,840 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:51:24,842 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,847 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:51:24,848 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,850 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:51:24,851 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,852 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:51:24,854 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,854 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:51:24,855 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,857 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:51:24,860 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 13:51:24,865 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,868 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 13:51:24,872 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 13:51:24,874 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 13:51:24,877 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 13:51:24,881 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-23 13:51:24,889 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,894 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-23 13:51:24,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:51:24,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,913 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 13:51:24,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 13:51:24,917 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,919 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 13:51:24,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 13:51:24,921 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 13:51:24,926 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,927 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,928 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,928 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,929 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,931 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,931 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,933 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,933 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,945 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,948 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,949 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,950 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,953 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,955 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,956 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,956 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,957 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,957 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,959 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,959 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,960 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,961 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,962 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,962 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,963 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,963 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,964 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,965 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,965 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,966 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,966 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,968 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,969 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,969 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,969 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:24,970 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:24,973 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 13:51:24,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-23 13:51:24,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2021-02-23 13:51:24,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190439135] [2021-02-23 13:51:24,977 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-23 13:51:24,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:51:24,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-23 13:51:24,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-02-23 13:51:24,981 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 11 states. [2021-02-23 13:51:25,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:51:25,234 INFO L93 Difference]: Finished difference Result 55 states and 62 transitions. [2021-02-23 13:51:25,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 13:51:25,235 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2021-02-23 13:51:25,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:51:25,236 INFO L225 Difference]: With dead ends: 55 [2021-02-23 13:51:25,236 INFO L226 Difference]: Without dead ends: 39 [2021-02-23 13:51:25,237 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-02-23 13:51:25,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-02-23 13:51:25,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2021-02-23 13:51:25,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-02-23 13:51:25,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2021-02-23 13:51:25,244 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 30 [2021-02-23 13:51:25,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:51:25,244 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2021-02-23 13:51:25,244 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-23 13:51:25,245 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2021-02-23 13:51:25,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-02-23 13:51:25,246 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:51:25,246 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:51:25,461 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-23 13:51:25,462 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:51:25,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:51:25,463 INFO L82 PathProgramCache]: Analyzing trace with hash 702007325, now seen corresponding path program 1 times [2021-02-23 13:51:25,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:51:25,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938414098] [2021-02-23 13:51:25,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:51:25,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:51:25,500 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:51:25,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:51:25,533 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:51:25,562 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-23 13:51:25,563 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 13:51:25,563 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 13:51:25,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 01:51:25 BoogieIcfgContainer [2021-02-23 13:51:25,608 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 13:51:25,609 INFO L168 Benchmark]: Toolchain (without parser) took 3725.27 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 126.3 MB in the beginning and 108.6 MB in the end (delta: 17.8 MB). Peak memory consumption was 48.6 MB. Max. memory is 8.0 GB. [2021-02-23 13:51:25,609 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 151.0 MB. Free memory is still 123.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 13:51:25,609 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.65 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 115.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-23 13:51:25,610 INFO L168 Benchmark]: Boogie Preprocessor took 39.89 ms. Allocated memory is still 151.0 MB. Free memory was 115.2 MB in the beginning and 113.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 13:51:25,610 INFO L168 Benchmark]: RCFGBuilder took 555.51 ms. Allocated memory is still 151.0 MB. Free memory was 113.6 MB in the beginning and 130.1 MB in the end (delta: -16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 8.0 GB. [2021-02-23 13:51:25,610 INFO L168 Benchmark]: TraceAbstraction took 2843.45 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 129.4 MB in the beginning and 108.6 MB in the end (delta: 20.9 MB). Peak memory consumption was 50.9 MB. Max. memory is 8.0 GB. [2021-02-23 13:51:25,612 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 151.0 MB. Free memory is still 123.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 260.65 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 115.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 39.89 ms. Allocated memory is still 151.0 MB. Free memory was 115.2 MB in the beginning and 113.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 555.51 ms. Allocated memory is still 151.0 MB. Free memory was 113.6 MB in the beginning and 130.1 MB in the end (delta: -16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2843.45 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 129.4 MB in the beginning and 108.6 MB in the end (delta: 20.9 MB). Peak memory consumption was 50.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; VAL [\old(N)=51, N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) VAL [\old(N)=0, N=2] [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=2] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=2] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=2] [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=2, sum={5:0}] [L31] COND TRUE i