/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/recursive-simple/id2_b2_o3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 22:55:41,111 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 22:55:41,114 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 22:55:41,174 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 22:55:41,258 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 22:55:41,270 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 22:55:41,271 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 22:55:41,273 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 22:55:41,273 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 22:55:41,273 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 22:55:41,274 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 22:55:41,274 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 22:55:41,274 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 22:55:41,274 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 22:55:41,275 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 22:55:41,275 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 22:55:41,275 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 22:55:41,275 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 22:55:41,276 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 22:55:41,276 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 22:55:41,276 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 22:55:41,276 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 22:55:41,277 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 22:55:41,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 22:55:41,277 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 22:55:41,277 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 22:55:41,278 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 22:55:41,278 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-23 22:55:41,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 22:55:41,679 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 22:55:41,683 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 22:55:41,684 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 22:55:41,691 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 22:55:41,693 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id2_b2_o3.c [2021-02-23 22:55:41,771 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d757fb93/10eed077c33346f6bad93041a2129a03/FLAGc2d239442 [2021-02-23 22:55:42,381 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 22:55:42,382 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id2_b2_o3.c [2021-02-23 22:55:42,390 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d757fb93/10eed077c33346f6bad93041a2129a03/FLAGc2d239442 [2021-02-23 22:55:42,759 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d757fb93/10eed077c33346f6bad93041a2129a03 [2021-02-23 22:55:42,763 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 22:55:42,778 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 22:55:42,781 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 22:55:42,781 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 22:55:42,786 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 22:55:42,787 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:55:42" (1/1) ... [2021-02-23 22:55:42,789 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68e4183e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:55:42, skipping insertion in model container [2021-02-23 22:55:42,789 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:55:42" (1/1) ... [2021-02-23 22:55:42,799 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 22:55:42,816 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 22:55:42,992 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id2_b2_o3.c[771,784] [2021-02-23 22:55:42,997 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 22:55:43,011 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 22:55:43,031 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id2_b2_o3.c[771,784] [2021-02-23 22:55:43,032 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 22:55:43,050 INFO L208 MainTranslator]: Completed translation [2021-02-23 22:55:43,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:55:43 WrapperNode [2021-02-23 22:55:43,051 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 22:55:43,053 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 22:55:43,053 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 22:55:43,053 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 22:55:43,068 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:55:43" (1/1) ... [2021-02-23 22:55:43,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:55:43" (1/1) ... [2021-02-23 22:55:43,077 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:55:43" (1/1) ... [2021-02-23 22:55:43,078 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:55:43" (1/1) ... [2021-02-23 22:55:43,085 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:55:43" (1/1) ... [2021-02-23 22:55:43,087 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:55:43" (1/1) ... [2021-02-23 22:55:43,089 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:55:43" (1/1) ... [2021-02-23 22:55:43,091 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 22:55:43,092 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 22:55:43,092 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 22:55:43,093 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 22:55:43,094 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:55:43" (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 22:55:43,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 22:55:43,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 22:55:43,222 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 22:55:43,222 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2021-02-23 22:55:43,222 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2021-02-23 22:55:43,222 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 22:55:43,223 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2021-02-23 22:55:43,223 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 22:55:43,223 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 22:55:43,223 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 22:55:43,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 22:55:43,224 INFO L130 BoogieDeclarations]: Found specification of procedure id [2021-02-23 22:55:43,224 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2021-02-23 22:55:43,224 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 22:55:43,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 22:55:43,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 22:55:43,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 22:55:43,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 22:55:43,225 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 22:55:43,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 22:55:43,822 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 22:55:43,826 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-23 22:55:43,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:55:43 BoogieIcfgContainer [2021-02-23 22:55:43,833 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 22:55:43,841 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 22:55:43,841 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 22:55:43,849 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 22:55:43,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 10:55:42" (1/3) ... [2021-02-23 22:55:43,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17df3994 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:55:43, skipping insertion in model container [2021-02-23 22:55:43,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:55:43" (2/3) ... [2021-02-23 22:55:43,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17df3994 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:55:43, skipping insertion in model container [2021-02-23 22:55:43,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:55:43" (3/3) ... [2021-02-23 22:55:43,861 INFO L111 eAbstractionObserver]: Analyzing ICFG id2_b2_o3.c [2021-02-23 22:55:43,880 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 22:55:43,891 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 22:55:43,920 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 22:55:43,970 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 22:55:43,971 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 22:55:43,971 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-23 22:55:43,971 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 22:55:43,972 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 22:55:43,972 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 22:55:43,972 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 22:55:43,972 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 22:55:44,004 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2021-02-23 22:55:44,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-23 22:55:44,021 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:55:44,022 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] [2021-02-23 22:55:44,023 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:55:44,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:55:44,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1880205997, now seen corresponding path program 1 times [2021-02-23 22:55:44,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:55:44,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1710657471] [2021-02-23 22:55:44,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:55:44,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:55:44,472 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:44,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:44,476 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:44,477 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:55:44,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:44,504 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:55:44,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:44,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:44,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:55:44,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:55:44,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:44,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:44,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:55:44,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:55:44,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:44,759 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:44,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:44,774 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:55:44,813 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 22:55:44,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1710657471] [2021-02-23 22:55:44,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 22:55:44,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 22:55:44,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542174664] [2021-02-23 22:55:44,831 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 22:55:44,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:55:44,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 22:55:44,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 22:55:44,856 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 6 states. [2021-02-23 22:55:45,154 WARN L202 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2021-02-23 22:55:45,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:55:45,484 INFO L93 Difference]: Finished difference Result 60 states and 66 transitions. [2021-02-23 22:55:45,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 22:55:45,486 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2021-02-23 22:55:45,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:55:45,498 INFO L225 Difference]: With dead ends: 60 [2021-02-23 22:55:45,498 INFO L226 Difference]: Without dead ends: 44 [2021-02-23 22:55:45,502 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-02-23 22:55:45,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-02-23 22:55:45,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-02-23 22:55:45,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2021-02-23 22:55:45,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2021-02-23 22:55:45,578 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 24 [2021-02-23 22:55:45,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:55:45,579 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2021-02-23 22:55:45,579 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 22:55:45,579 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2021-02-23 22:55:45,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-02-23 22:55:45,582 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:55:45,583 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, 1, 1, 1, 1, 1, 1] [2021-02-23 22:55:45,583 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 22:55:45,583 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:55:45,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:55:45,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1658084422, now seen corresponding path program 1 times [2021-02-23 22:55:45,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:55:45,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044297624] [2021-02-23 22:55:45,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:55:45,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:55:45,679 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:45,680 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:45,682 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:45,683 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:45,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:55:45,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:55:45,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:45,736 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:45,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:55:45,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:55:45,766 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:45,767 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:45,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:45,772 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:55:45,786 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-23 22:55:45,787 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-23 22:55:45,812 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:45,813 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:45,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:55:45,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:55:45,828 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:45,828 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:45,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:45,830 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:55:45,857 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 22:55:45,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1044297624] [2021-02-23 22:55:45,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 22:55:45,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 22:55:45,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612275787] [2021-02-23 22:55:45,865 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 22:55:45,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:55:45,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 22:55:45,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 22:55:45,870 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 6 states. [2021-02-23 22:55:46,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:55:46,359 INFO L93 Difference]: Finished difference Result 71 states and 79 transitions. [2021-02-23 22:55:46,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 22:55:46,360 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2021-02-23 22:55:46,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:55:46,363 INFO L225 Difference]: With dead ends: 71 [2021-02-23 22:55:46,363 INFO L226 Difference]: Without dead ends: 52 [2021-02-23 22:55:46,366 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-02-23 22:55:46,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-02-23 22:55:46,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2021-02-23 22:55:46,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2021-02-23 22:55:46,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2021-02-23 22:55:46,390 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 33 [2021-02-23 22:55:46,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:55:46,391 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2021-02-23 22:55:46,391 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 22:55:46,391 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2021-02-23 22:55:46,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-02-23 22:55:46,393 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:55:46,393 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, 1, 1, 1, 1, 1, 1] [2021-02-23 22:55:46,394 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 22:55:46,394 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:55:46,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:55:46,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1671222138, now seen corresponding path program 1 times [2021-02-23 22:55:46,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:55:46,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [221510049] [2021-02-23 22:55:46,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:55:46,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:55:46,456 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:46,458 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:46,460 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:46,461 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:55:46,474 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-23 22:55:46,476 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-23 22:55:46,510 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:46,512 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:46,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:55:46,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:55:46,599 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:46,601 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:46,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:55:46,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:55:46,657 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:46,662 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:46,664 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:46,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:55:46,684 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:46,686 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:55:46,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:46,705 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:55:46,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:55:46,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:55:46,752 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:46,754 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:46,756 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:46,757 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:55:46,783 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 22:55:46,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [221510049] [2021-02-23 22:55:46,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 22:55:46,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 22:55:46,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578016428] [2021-02-23 22:55:46,788 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 22:55:46,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:55:46,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 22:55:46,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-02-23 22:55:46,792 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 9 states. [2021-02-23 22:55:47,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:55:47,393 INFO L93 Difference]: Finished difference Result 57 states and 61 transitions. [2021-02-23 22:55:47,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-23 22:55:47,394 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2021-02-23 22:55:47,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:55:47,396 INFO L225 Difference]: With dead ends: 57 [2021-02-23 22:55:47,396 INFO L226 Difference]: Without dead ends: 52 [2021-02-23 22:55:47,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2021-02-23 22:55:47,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-02-23 22:55:47,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2021-02-23 22:55:47,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-02-23 22:55:47,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2021-02-23 22:55:47,416 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 33 [2021-02-23 22:55:47,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:55:47,417 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2021-02-23 22:55:47,417 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 22:55:47,417 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2021-02-23 22:55:47,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-23 22:55:47,419 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:55:47,419 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 22:55:47,419 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 22:55:47,419 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:55:47,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:55:47,420 INFO L82 PathProgramCache]: Analyzing trace with hash -816709640, now seen corresponding path program 1 times [2021-02-23 22:55:47,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:55:47,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [18207862] [2021-02-23 22:55:47,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:55:47,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:55:47,467 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:47,468 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:47,469 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:47,469 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:47,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:55:47,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:55:47,504 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:47,505 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:47,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:55:47,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:55:47,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:47,528 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:47,529 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:47,529 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:47,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:55:47,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:55:47,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:47,549 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:47,551 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:47,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:55:47,562 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-23 22:55:47,564 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-23 22:55:47,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:47,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:47,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:55:47,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:55:47,598 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:47,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:47,600 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:47,601 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:55:47,616 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-23 22:55:47,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [18207862] [2021-02-23 22:55:47,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 22:55:47,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 22:55:47,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053629175] [2021-02-23 22:55:47,619 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 22:55:47,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:55:47,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 22:55:47,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 22:55:47,621 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 6 states. [2021-02-23 22:55:47,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:55:47,987 INFO L93 Difference]: Finished difference Result 77 states and 84 transitions. [2021-02-23 22:55:47,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 22:55:47,988 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 42 [2021-02-23 22:55:47,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:55:47,990 INFO L225 Difference]: With dead ends: 77 [2021-02-23 22:55:47,990 INFO L226 Difference]: Without dead ends: 58 [2021-02-23 22:55:47,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-02-23 22:55:47,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-02-23 22:55:48,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 55. [2021-02-23 22:55:48,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-02-23 22:55:48,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2021-02-23 22:55:48,010 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 42 [2021-02-23 22:55:48,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:55:48,011 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2021-02-23 22:55:48,011 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 22:55:48,011 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2021-02-23 22:55:48,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-23 22:55:48,013 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:55:48,013 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 22:55:48,014 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 22:55:48,014 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:55:48,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:55:48,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1880334392, now seen corresponding path program 1 times [2021-02-23 22:55:48,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:55:48,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [439803282] [2021-02-23 22:55:48,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:55:48,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:55:48,055 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:48,056 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:48,057 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:48,058 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:48,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:55:48,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:55:48,099 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:48,101 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:48,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:55:48,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:55:48,126 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:48,127 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:48,129 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:48,130 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:55:48,141 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-23 22:55:48,143 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-23 22:55:48,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:48,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:48,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:55:48,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:55:48,212 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:48,214 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:48,216 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:48,218 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:55:48,230 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:48,232 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:55:48,247 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:48,249 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:55:48,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:55:48,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:55:48,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:48,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:48,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:48,278 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:55:48,300 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-23 22:55:48,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [439803282] [2021-02-23 22:55:48,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 22:55:48,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 22:55:48,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435705698] [2021-02-23 22:55:48,303 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 22:55:48,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:55:48,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 22:55:48,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-02-23 22:55:48,304 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 9 states. [2021-02-23 22:55:48,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:55:48,968 INFO L93 Difference]: Finished difference Result 83 states and 91 transitions. [2021-02-23 22:55:48,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-23 22:55:48,968 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2021-02-23 22:55:48,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:55:48,970 INFO L225 Difference]: With dead ends: 83 [2021-02-23 22:55:48,970 INFO L226 Difference]: Without dead ends: 64 [2021-02-23 22:55:48,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2021-02-23 22:55:48,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-02-23 22:55:48,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2021-02-23 22:55:48,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2021-02-23 22:55:48,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2021-02-23 22:55:48,992 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 42 [2021-02-23 22:55:48,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:55:48,992 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2021-02-23 22:55:48,993 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 22:55:48,993 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2021-02-23 22:55:48,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-23 22:55:48,995 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:55:48,995 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 22:55:48,995 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 22:55:48,995 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:55:48,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:55:48,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1448972168, now seen corresponding path program 1 times [2021-02-23 22:55:48,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:55:48,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1456909599] [2021-02-23 22:55:48,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:55:49,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:55:49,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:49,031 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:49,033 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:49,034 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:55:49,043 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-23 22:55:49,044 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-23 22:55:49,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:49,064 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:49,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:55:49,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:55:49,099 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:49,100 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:49,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:55:49,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:55:49,119 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:49,120 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:49,121 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:49,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:55:49,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:49,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:55:49,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:49,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:55:49,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:55:49,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:55:49,176 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:49,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:49,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:49,179 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:55:49,193 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:49,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:55:49,211 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:49,212 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:55:49,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:55:49,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:55:49,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:49,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:49,241 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:49,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:55:49,266 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-23 22:55:49,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1456909599] [2021-02-23 22:55:49,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:55:49,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-02-23 22:55:49,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656200798] [2021-02-23 22:55:49,268 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-23 22:55:49,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:55:49,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-23 22:55:49,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-02-23 22:55:49,269 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 12 states. [2021-02-23 22:55:50,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:55:50,196 INFO L93 Difference]: Finished difference Result 71 states and 76 transitions. [2021-02-23 22:55:50,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-23 22:55:50,197 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 42 [2021-02-23 22:55:50,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:55:50,199 INFO L225 Difference]: With dead ends: 71 [2021-02-23 22:55:50,199 INFO L226 Difference]: Without dead ends: 66 [2021-02-23 22:55:50,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=87, Invalid=513, Unknown=0, NotChecked=0, Total=600 [2021-02-23 22:55:50,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-02-23 22:55:50,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 56. [2021-02-23 22:55:50,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-02-23 22:55:50,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2021-02-23 22:55:50,222 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 42 [2021-02-23 22:55:50,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:55:50,223 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2021-02-23 22:55:50,223 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-23 22:55:50,223 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2021-02-23 22:55:50,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-02-23 22:55:50,225 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:55:50,225 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2021-02-23 22:55:50,225 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 22:55:50,226 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:55:50,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:55:50,226 INFO L82 PathProgramCache]: Analyzing trace with hash 233147845, now seen corresponding path program 1 times [2021-02-23 22:55:50,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:55:50,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [986044277] [2021-02-23 22:55:50,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:55:50,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:55:50,265 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:50,266 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:50,267 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:50,268 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:50,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:55:50,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:55:50,318 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:50,343 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:50,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:55:50,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:55:50,395 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:50,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:50,400 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:50,401 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:50,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:55:50,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:55:50,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:50,444 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:50,446 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:50,447 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:55:50,462 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-23 22:55:50,474 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-23 22:55:50,504 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:50,505 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:50,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:55:50,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:55:50,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:50,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:50,526 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:50,532 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:55:50,545 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:50,546 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:55:50,565 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:50,570 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:55:50,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:55:50,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:55:50,609 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:50,610 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:50,614 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:50,616 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:55:50,653 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-02-23 22:55:50,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [986044277] [2021-02-23 22:55:50,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 22:55:50,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 22:55:50,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692941307] [2021-02-23 22:55:50,658 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 22:55:50,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:55:50,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 22:55:50,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-02-23 22:55:50,661 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 9 states. [2021-02-23 22:55:51,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:55:51,278 INFO L93 Difference]: Finished difference Result 91 states and 98 transitions. [2021-02-23 22:55:51,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-23 22:55:51,280 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2021-02-23 22:55:51,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:55:51,282 INFO L225 Difference]: With dead ends: 91 [2021-02-23 22:55:51,282 INFO L226 Difference]: Without dead ends: 70 [2021-02-23 22:55:51,284 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2021-02-23 22:55:51,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-02-23 22:55:51,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 67. [2021-02-23 22:55:51,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2021-02-23 22:55:51,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2021-02-23 22:55:51,310 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 51 [2021-02-23 22:55:51,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:55:51,310 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2021-02-23 22:55:51,310 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 22:55:51,311 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2021-02-23 22:55:51,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-02-23 22:55:51,312 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:55:51,313 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2021-02-23 22:55:51,313 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-23 22:55:51,313 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:55:51,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:55:51,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1364775419, now seen corresponding path program 1 times [2021-02-23 22:55:51,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:55:51,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1584548671] [2021-02-23 22:55:51,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:55:51,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:55:51,355 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:51,356 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:51,357 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:51,357 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:51,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:55:51,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:55:51,400 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:51,401 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:51,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:55:51,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:55:51,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:51,427 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:51,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:51,429 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:55:51,442 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-23 22:55:51,444 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-23 22:55:51,469 WARN L141 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-02-23 22:55:51,470 WARN L147 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size 1 [2021-02-23 22:55:51,470 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:51,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:51,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:55:51,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:55:51,488 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:51,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:51,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:51,490 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:55:51,503 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:51,504 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:55:51,522 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:51,523 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:55:51,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:55:51,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:55:51,552 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:51,553 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:51,554 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:51,555 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:55:51,573 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:51,574 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:55:51,599 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:51,601 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:55:51,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:55:51,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:55:51,633 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:51,633 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:51,635 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:51,636 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:55:51,714 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-02-23 22:55:51,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1584548671] [2021-02-23 22:55:51,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:55:51,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-02-23 22:55:51,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603800053] [2021-02-23 22:55:51,717 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-23 22:55:51,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:55:51,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-23 22:55:51,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-02-23 22:55:51,718 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 12 states. [2021-02-23 22:55:52,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:55:52,659 INFO L93 Difference]: Finished difference Result 99 states and 106 transitions. [2021-02-23 22:55:52,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-23 22:55:52,660 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 51 [2021-02-23 22:55:52,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:55:52,662 INFO L225 Difference]: With dead ends: 99 [2021-02-23 22:55:52,662 INFO L226 Difference]: Without dead ends: 78 [2021-02-23 22:55:52,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=87, Invalid=513, Unknown=0, NotChecked=0, Total=600 [2021-02-23 22:55:52,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-02-23 22:55:52,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 73. [2021-02-23 22:55:52,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2021-02-23 22:55:52,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2021-02-23 22:55:52,687 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 51 [2021-02-23 22:55:52,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:55:52,687 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2021-02-23 22:55:52,687 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-23 22:55:52,688 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2021-02-23 22:55:52,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-02-23 22:55:52,689 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:55:52,689 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-02-23 22:55:52,690 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-23 22:55:52,690 INFO L428 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:55:52,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:55:52,691 INFO L82 PathProgramCache]: Analyzing trace with hash -239798205, now seen corresponding path program 2 times [2021-02-23 22:55:52,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:55:52,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1305913962] [2021-02-23 22:55:52,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:55:52,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:55:52,753 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:52,754 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:52,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:52,755 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:52,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:55:52,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:55:52,787 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:52,788 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:52,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:55:52,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:55:52,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:52,811 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:52,812 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:52,812 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:52,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:55:52,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:55:52,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:52,833 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:52,834 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:52,834 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:55:52,846 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-23 22:55:52,847 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-23 22:55:52,868 WARN L141 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-02-23 22:55:52,869 WARN L147 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size 1 [2021-02-23 22:55:52,870 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:52,870 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:52,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:55:52,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:55:52,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:52,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:52,889 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:52,890 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:55:52,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:52,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:55:52,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:52,917 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:55:52,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:55:52,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:55:52,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:52,945 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:52,946 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:52,947 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:55:52,964 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:52,966 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:55:52,982 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:52,983 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:55:53,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:55:53,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:55:53,017 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:53,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:55:53,020 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:55:53,020 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:55:53,053 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-02-23 22:55:53,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1305913962] [2021-02-23 22:55:53,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:55:53,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-02-23 22:55:53,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689743954] [2021-02-23 22:55:53,056 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-23 22:55:53,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:55:53,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-23 22:55:53,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-02-23 22:55:53,057 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 12 states. [2021-02-23 22:55:53,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:55:53,837 INFO L93 Difference]: Finished difference Result 89 states and 94 transitions. [2021-02-23 22:55:53,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-23 22:55:53,837 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 60 [2021-02-23 22:55:53,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:55:53,838 INFO L225 Difference]: With dead ends: 89 [2021-02-23 22:55:53,838 INFO L226 Difference]: Without dead ends: 0 [2021-02-23 22:55:53,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=87, Invalid=513, Unknown=0, NotChecked=0, Total=600 [2021-02-23 22:55:53,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-23 22:55:53,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-23 22:55:53,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-23 22:55:53,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-23 22:55:53,840 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 60 [2021-02-23 22:55:53,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:55:53,841 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-23 22:55:53,841 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-23 22:55:53,841 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-23 22:55:53,841 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-23 22:55:53,841 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-23 22:55:53,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-23 22:55:54,612 WARN L202 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 21 [2021-02-23 22:55:54,948 WARN L202 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 24 [2021-02-23 22:55:55,160 WARN L202 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 17 [2021-02-23 22:55:55,421 WARN L202 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 17 [2021-02-23 22:55:55,820 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 24 [2021-02-23 22:55:55,925 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2021-02-23 22:55:55,926 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 4) no Hoare annotation was computed. [2021-02-23 22:55:55,926 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2021-02-23 22:55:55,926 INFO L192 CegarLoopUtils]: At program point L4-3(line 4) the Hoare annotation is: true [2021-02-23 22:55:55,926 INFO L192 CegarLoopUtils]: At program point L4-4(line 4) the Hoare annotation is: true [2021-02-23 22:55:55,926 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 22:55:55,927 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-23 22:55:55,927 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 4) the Hoare annotation is: true [2021-02-23 22:55:55,927 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-02-23 22:55:55,927 INFO L192 CegarLoopUtils]: At program point L4(line 4) the Hoare annotation is: true [2021-02-23 22:55:55,927 INFO L192 CegarLoopUtils]: At program point L4-1(line 4) the Hoare annotation is: true [2021-02-23 22:55:55,928 INFO L192 CegarLoopUtils]: At program point L4-2(line 4) the Hoare annotation is: true [2021-02-23 22:55:55,928 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-23 22:55:55,928 INFO L185 CegarLoopUtils]: At program point L20(line 20) the Hoare annotation is: (or (and (<= 1 id2_~ret~1) (<= id2_~ret~1 1)) (and (<= id2_~ret~1 2) (<= 2 id2_~ret~1))) [2021-02-23 22:55:55,928 INFO L185 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: (or (and (<= id2_~ret~1 2) (<= 2 id2_~ret~1)) (and (<= 1 id2_~ret~1) (<= id2_~ret~1 1)) (and (<= 3 id2_~ret~1) (<= (div id2_~ret~1 4294967296) 0))) [2021-02-23 22:55:55,929 INFO L185 CegarLoopUtils]: At program point id2FINAL(lines 16 21) the Hoare annotation is: (or (and (<= 1 id2_~ret~1) (<= |id2_#res| 1) (<= id2_~ret~1 1) (<= 1 |id2_#res|)) (and (<= 2 |id2_#res|) (<= |id2_#res| 2)) (and (<= |id2_#res| 0) (<= 0 |id2_#res|))) [2021-02-23 22:55:55,929 INFO L192 CegarLoopUtils]: At program point L18(line 18) the Hoare annotation is: true [2021-02-23 22:55:55,929 INFO L185 CegarLoopUtils]: At program point L19-1(line 19) the Hoare annotation is: (and (<= 3 id2_~ret~1) (<= (div id2_~ret~1 4294967296) 0)) [2021-02-23 22:55:55,929 INFO L192 CegarLoopUtils]: At program point L17(line 17) the Hoare annotation is: true [2021-02-23 22:55:55,930 INFO L185 CegarLoopUtils]: At program point L18-1(line 18) the Hoare annotation is: (or (and (<= 0 |id2_#t~ret8|) (<= |id2_#t~ret8| 0)) (and (<= 2 |id2_#t~ret8|) (<= |id2_#t~ret8| 2)) (and (<= |id2_#t~ret8| 1) (<= 1 |id2_#t~ret8|))) [2021-02-23 22:55:55,930 INFO L192 CegarLoopUtils]: At program point L17-1(line 17) the Hoare annotation is: true [2021-02-23 22:55:55,930 INFO L185 CegarLoopUtils]: At program point L18-2(line 18) the Hoare annotation is: (or (and (<= 0 |id2_#t~ret8|) (<= 1 id2_~ret~1) (<= |id2_#t~ret8| 0) (<= id2_~ret~1 1)) (and (<= 3 id2_~ret~1) (<= (div id2_~ret~1 4294967296) 0) (<= |id2_#t~ret8| 2) (<= 2 |id2_#t~ret8|)) (and (<= id2_~ret~1 2) (<= |id2_#t~ret8| 1) (<= 1 |id2_#t~ret8|) (<= 2 id2_~ret~1))) [2021-02-23 22:55:55,930 INFO L185 CegarLoopUtils]: At program point id2EXIT(lines 16 21) the Hoare annotation is: (or (and (<= 1 id2_~ret~1) (<= |id2_#res| 1) (<= id2_~ret~1 1) (<= 1 |id2_#res|)) (and (<= 2 |id2_#res|) (<= |id2_#res| 2)) (and (<= |id2_#res| 0) (<= 0 |id2_#res|))) [2021-02-23 22:55:55,930 INFO L192 CegarLoopUtils]: At program point id2ENTRY(lines 16 21) the Hoare annotation is: true [2021-02-23 22:55:55,931 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-23 22:55:55,931 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 22:55:55,931 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-23 22:55:55,931 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-23 22:55:55,931 INFO L185 CegarLoopUtils]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 27) the Hoare annotation is: false [2021-02-23 22:55:55,931 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 23 29) the Hoare annotation is: true [2021-02-23 22:55:55,931 INFO L185 CegarLoopUtils]: At program point L27(line 27) the Hoare annotation is: false [2021-02-23 22:55:55,931 INFO L185 CegarLoopUtils]: At program point L26(lines 26 28) the Hoare annotation is: (and (<= main_~result~0 2) (< 0 (+ (div main_~result~0 4294967296) 1))) [2021-02-23 22:55:55,931 INFO L185 CegarLoopUtils]: At program point L27-1(line 27) the Hoare annotation is: false [2021-02-23 22:55:55,932 INFO L192 CegarLoopUtils]: At program point L25(line 25) the Hoare annotation is: true [2021-02-23 22:55:55,932 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 23 29) the Hoare annotation is: true [2021-02-23 22:55:55,932 INFO L192 CegarLoopUtils]: At program point L24(line 24) the Hoare annotation is: true [2021-02-23 22:55:55,932 INFO L185 CegarLoopUtils]: At program point L25-1(line 25) the Hoare annotation is: (or (and (<= |main_#t~ret10| 2) (<= 2 |main_#t~ret10|)) (= |main_#t~ret10| 0) (and (<= |main_#t~ret10| 1) (<= 1 |main_#t~ret10|))) [2021-02-23 22:55:55,932 INFO L192 CegarLoopUtils]: At program point L26-2(lines 23 29) the Hoare annotation is: true [2021-02-23 22:55:55,932 INFO L185 CegarLoopUtils]: At program point L25-2(line 25) the Hoare annotation is: (let ((.cse0 (< 0 (+ (div main_~result~0 4294967296) 1)))) (or (and (<= |main_#t~ret10| 1) (<= 1 |main_#t~ret10|) (<= main_~result~0 1) .cse0) (and (= main_~result~0 0) (= |main_#t~ret10| 0)) (and (<= main_~result~0 2) (<= |main_#t~ret10| 2) (<= 2 |main_#t~ret10|) .cse0))) [2021-02-23 22:55:55,932 INFO L185 CegarLoopUtils]: At program point idFINAL(lines 9 14) the Hoare annotation is: (or (and (<= |id_#res| 1) (<= id_~ret~0 1) (<= 1 |id_#res|) (<= 1 id_~ret~0)) (and (<= 0 |id_#res|) (<= |id_#res| 0)) (and (<= 2 |id_#res|) (<= |id_#res| 2))) [2021-02-23 22:55:55,932 INFO L185 CegarLoopUtils]: At program point idEXIT(lines 9 14) the Hoare annotation is: (or (and (<= |id_#res| 1) (<= id_~ret~0 1) (<= 1 |id_#res|) (<= 1 id_~ret~0)) (and (<= 0 |id_#res|) (<= |id_#res| 0)) (and (<= 2 |id_#res|) (<= |id_#res| 2))) [2021-02-23 22:55:55,932 INFO L192 CegarLoopUtils]: At program point idENTRY(lines 9 14) the Hoare annotation is: true [2021-02-23 22:55:55,933 INFO L185 CegarLoopUtils]: At program point L13(line 13) the Hoare annotation is: (or (and (<= id_~ret~0 2) (<= 2 id_~ret~0)) (and (<= id_~ret~0 1) (<= 1 id_~ret~0))) [2021-02-23 22:55:55,933 INFO L185 CegarLoopUtils]: At program point L12(line 12) the Hoare annotation is: (or (and (<= id_~ret~0 2) (<= 2 id_~ret~0)) (and (<= 3 id_~ret~0) (<= (div id_~ret~0 4294967296) 0)) (and (<= id_~ret~0 1) (<= 1 id_~ret~0))) [2021-02-23 22:55:55,933 INFO L192 CegarLoopUtils]: At program point L11(line 11) the Hoare annotation is: true [2021-02-23 22:55:55,933 INFO L192 CegarLoopUtils]: At program point L12-1(line 12) the Hoare annotation is: true [2021-02-23 22:55:55,933 INFO L192 CegarLoopUtils]: At program point L10(line 10) the Hoare annotation is: true [2021-02-23 22:55:55,933 INFO L185 CegarLoopUtils]: At program point L11-1(line 11) the Hoare annotation is: (or (and (<= |id_#t~ret7| 1) (<= 1 |id_#t~ret7|)) (and (<= |id_#t~ret7| 2) (<= 2 |id_#t~ret7|)) (and (<= 0 |id_#t~ret7|) (<= |id_#t~ret7| 0))) [2021-02-23 22:55:55,933 INFO L192 CegarLoopUtils]: At program point L10-1(line 10) the Hoare annotation is: true [2021-02-23 22:55:55,933 INFO L185 CegarLoopUtils]: At program point L11-2(line 11) the Hoare annotation is: (or (and (<= 3 id_~ret~0) (<= (div id_~ret~0 4294967296) 0) (<= |id_#t~ret7| 2) (<= 2 |id_#t~ret7|)) (and (<= id_~ret~0 2) (<= |id_#t~ret7| 1) (<= 1 |id_#t~ret7|) (<= 2 id_~ret~0)) (and (<= 0 |id_#t~ret7|) (<= id_~ret~0 1) (<= |id_#t~ret7| 0) (<= 1 id_~ret~0))) [2021-02-23 22:55:55,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 10:55:55 BoogieIcfgContainer [2021-02-23 22:55:55,951 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 22:55:55,952 INFO L168 Benchmark]: Toolchain (without parser) took 13186.38 ms. Allocated memory was 161.5 MB in the beginning and 313.5 MB in the end (delta: 152.0 MB). Free memory was 138.2 MB in the beginning and 251.4 MB in the end (delta: -113.2 MB). Peak memory consumption was 177.8 MB. Max. memory is 8.0 GB. [2021-02-23 22:55:55,952 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 161.5 MB. Free memory was 135.3 MB in the beginning and 135.2 MB in the end (delta: 80.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 22:55:55,952 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.78 ms. Allocated memory is still 161.5 MB. Free memory was 137.0 MB in the beginning and 127.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-23 22:55:55,953 INFO L168 Benchmark]: Boogie Preprocessor took 38.51 ms. Allocated memory is still 161.5 MB. Free memory was 127.6 MB in the beginning and 126.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 22:55:55,953 INFO L168 Benchmark]: RCFGBuilder took 741.00 ms. Allocated memory is still 161.5 MB. Free memory was 126.2 MB in the beginning and 142.4 MB in the end (delta: -16.1 MB). Peak memory consumption was 16.3 MB. Max. memory is 8.0 GB. [2021-02-23 22:55:55,954 INFO L168 Benchmark]: TraceAbstraction took 12109.81 ms. Allocated memory was 161.5 MB in the beginning and 313.5 MB in the end (delta: 152.0 MB). Free memory was 141.8 MB in the beginning and 251.4 MB in the end (delta: -109.6 MB). Peak memory consumption was 181.4 MB. Max. memory is 8.0 GB. [2021-02-23 22:55:55,955 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 161.5 MB. Free memory was 135.3 MB in the beginning and 135.2 MB in the end (delta: 80.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 270.78 ms. Allocated memory is still 161.5 MB. Free memory was 137.0 MB in the beginning and 127.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 38.51 ms. Allocated memory is still 161.5 MB. Free memory was 127.6 MB in the beginning and 126.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 741.00 ms. Allocated memory is still 161.5 MB. Free memory was 126.2 MB in the beginning and 142.4 MB in the end (delta: -16.1 MB). Peak memory consumption was 16.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 12109.81 ms. Allocated memory was 161.5 MB in the beginning and 313.5 MB in the end (delta: 152.0 MB). Free memory was 141.8 MB in the beginning and 251.4 MB in the end (delta: -109.6 MB). Peak memory consumption was 181.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 27]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ProcedureContractResult [Line: 16]: Procedure Contract for id2 Derived contract for procedure id2: ((((1 <= ret && \result <= 1) && ret <= 1) && 1 <= \result) || (2 <= \result && \result <= 2)) || (\result <= 0 && 0 <= \result) - ProcedureContractResult [Line: 23]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 9]: Procedure Contract for id Derived contract for procedure id: ((((\result <= 1 && ret <= 1) && 1 <= \result) && 1 <= ret) || (0 <= \result && \result <= 0)) || (2 <= \result && \result <= 2) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 50 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.8s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 6.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 380 SDtfs, 359 SDslu, 844 SDs, 0 SdLazy, 2129 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 230 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=8, 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, 9 MinimizatonAttempts, 29 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 47 LocationsWithAnnotation, 58 PreInvPairs, 161 NumberOfFragments, 459 HoareAnnotationTreeSize, 58 FomulaSimplifications, 26519 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 47 FomulaSimplificationsInter, 3047 FormulaSimplificationTreeSizeReductionInter, 1.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 378 NumberOfCodeBlocks, 378 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 369 ConstructedInterpolants, 0 QuantifiedInterpolants, 55525 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 6 PerfectInterpolantSequences, 52/64 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...