/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/eca-rers2012/Problem10_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 00:02:50,615 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 00:02:50,622 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 00:02:50,679 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 00:02:50,756 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-24 00:02:50,772 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 00:02:50,773 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 00:02:50,774 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 00:02:50,775 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 00:02:50,775 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 00:02:50,775 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 00:02:50,776 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 00:02:50,776 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 00:02:50,776 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 00:02:50,776 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 00:02:50,777 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 00:02:50,777 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 00:02:50,777 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 00:02:50,777 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 00:02:50,778 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 00:02:50,778 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 00:02:50,778 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 00:02:50,778 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 00:02:50,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 00:02:50,779 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 00:02:50,779 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 00:02:50,779 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 00:02:50,780 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-24 00:02:51,185 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 00:02:51,220 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 00:02:51,224 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 00:02:51,225 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 00:02:51,226 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 00:02:51,227 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label44.c [2021-02-24 00:02:51,310 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d996f39e/5a815ccca67c4e7c8245d5f2819991bb/FLAG8af72d1db [2021-02-24 00:02:52,181 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 00:02:52,182 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label44.c [2021-02-24 00:02:52,212 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d996f39e/5a815ccca67c4e7c8245d5f2819991bb/FLAG8af72d1db [2021-02-24 00:02:52,369 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d996f39e/5a815ccca67c4e7c8245d5f2819991bb [2021-02-24 00:02:52,372 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 00:02:52,384 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 00:02:52,385 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 00:02:52,386 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 00:02:52,390 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 00:02:52,391 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:02:52" (1/1) ... [2021-02-24 00:02:52,392 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73c0dd71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:02:52, skipping insertion in model container [2021-02-24 00:02:52,392 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:02:52" (1/1) ... [2021-02-24 00:02:52,400 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 00:02:52,445 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 00:02:52,680 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label44.c[6569,6582] [2021-02-24 00:02:52,848 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:02:52,859 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 00:02:52,903 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label44.c[6569,6582] [2021-02-24 00:02:53,027 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:02:53,075 INFO L208 MainTranslator]: Completed translation [2021-02-24 00:02:53,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:02:53 WrapperNode [2021-02-24 00:02:53,076 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 00:02:53,077 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 00:02:53,078 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 00:02:53,078 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 00:02:53,091 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:02:53" (1/1) ... [2021-02-24 00:02:53,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:02:53" (1/1) ... [2021-02-24 00:02:53,122 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:02:53" (1/1) ... [2021-02-24 00:02:53,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:02:53" (1/1) ... [2021-02-24 00:02:53,176 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:02:53" (1/1) ... [2021-02-24 00:02:53,202 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:02:53" (1/1) ... [2021-02-24 00:02:53,217 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:02:53" (1/1) ... [2021-02-24 00:02:53,236 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 00:02:53,239 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 00:02:53,239 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 00:02:53,239 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 00:02:53,241 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:02:53" (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 [2021-02-24 00:02:53,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 00:02:53,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 00:02:53,354 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 00:02:53,354 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2021-02-24 00:02:53,354 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 00:02:53,354 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2021-02-24 00:02:53,354 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 00:02:53,355 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 00:02:53,355 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 00:02:53,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 00:02:53,355 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 00:02:53,355 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-24 00:02:53,355 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 00:02:53,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 00:02:53,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 00:02:53,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 00:02:53,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 00:02:53,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 00:02:53,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 00:02:55,073 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 00:02:55,075 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-24 00:02:55,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:02:55 BoogieIcfgContainer [2021-02-24 00:02:55,079 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 00:02:55,084 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 00:02:55,084 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 00:02:55,088 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 00:02:55,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 12:02:52" (1/3) ... [2021-02-24 00:02:55,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@676156a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:02:55, skipping insertion in model container [2021-02-24 00:02:55,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:02:53" (2/3) ... [2021-02-24 00:02:55,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@676156a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:02:55, skipping insertion in model container [2021-02-24 00:02:55,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:02:55" (3/3) ... [2021-02-24 00:02:55,092 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem10_label44.c [2021-02-24 00:02:55,099 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 00:02:55,105 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 00:02:55,124 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 00:02:55,150 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 00:02:55,150 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 00:02:55,150 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-24 00:02:55,150 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 00:02:55,150 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 00:02:55,150 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 00:02:55,151 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 00:02:55,151 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 00:02:55,177 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states. [2021-02-24 00:02:55,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-02-24 00:02:55,191 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:02:55,192 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:02:55,193 INFO L428 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:02:55,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:02:55,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1005433522, now seen corresponding path program 1 times [2021-02-24 00:02:55,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:02:55,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818264127] [2021-02-24 00:02:55,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:02:55,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:02:55,642 WARN L141 QuantifierPusher]: treesize reduction 17, result has 19.0 percent of original size [2021-02-24 00:02:55,644 WARN L147 QuantifierPusher]: treesize reduction 17, result has 19.0 percent of original size 4 [2021-02-24 00:02:55,655 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:02:55,656 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:02:55,656 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:02:55,657 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:02:55,658 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:02:55,659 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:02:55,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:02:55,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:02:55,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:02:55,748 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:02:55,749 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:02:55,750 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:02:55,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:02:55,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [818264127] [2021-02-24 00:02:55,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:02:55,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-24 00:02:55,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740825463] [2021-02-24 00:02:55,796 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 00:02:55,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:02:55,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 00:02:55,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-24 00:02:55,814 INFO L87 Difference]: Start difference. First operand 465 states. Second operand 5 states. [2021-02-24 00:02:59,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:02:59,053 INFO L93 Difference]: Finished difference Result 1235 states and 1806 transitions. [2021-02-24 00:02:59,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-24 00:02:59,055 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2021-02-24 00:02:59,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:02:59,080 INFO L225 Difference]: With dead ends: 1235 [2021-02-24 00:02:59,080 INFO L226 Difference]: Without dead ends: 715 [2021-02-24 00:02:59,093 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-02-24 00:02:59,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2021-02-24 00:02:59,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 703. [2021-02-24 00:02:59,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 703 states. [2021-02-24 00:02:59,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 934 transitions. [2021-02-24 00:02:59,341 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 934 transitions. Word has length 84 [2021-02-24 00:02:59,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:02:59,342 INFO L480 AbstractCegarLoop]: Abstraction has 703 states and 934 transitions. [2021-02-24 00:02:59,342 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 00:02:59,342 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 934 transitions. [2021-02-24 00:02:59,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-02-24 00:02:59,353 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:02:59,353 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2021-02-24 00:02:59,354 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 00:02:59,354 INFO L428 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:02:59,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:02:59,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1710091557, now seen corresponding path program 1 times [2021-02-24 00:02:59,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:02:59,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1203109869] [2021-02-24 00:02:59,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:02:59,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:02:59,514 WARN L141 QuantifierPusher]: treesize reduction 17, result has 19.0 percent of original size [2021-02-24 00:02:59,516 WARN L147 QuantifierPusher]: treesize reduction 17, result has 19.0 percent of original size 4 [2021-02-24 00:02:59,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:02:59,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:02:59,526 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:02:59,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:02:59,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:02:59,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:02:59,634 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:02:59,636 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:02:59,638 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:02:59,639 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:02:59,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-24 00:02:59,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:02:59,770 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:02:59,772 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:02:59,781 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:02:59,782 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:02:59,856 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:02:59,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1203109869] [2021-02-24 00:02:59,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:02:59,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-24 00:02:59,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883472024] [2021-02-24 00:02:59,862 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-24 00:02:59,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:02:59,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-24 00:02:59,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-02-24 00:02:59,864 INFO L87 Difference]: Start difference. First operand 703 states and 934 transitions. Second operand 8 states. [2021-02-24 00:03:02,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:03:02,417 INFO L93 Difference]: Finished difference Result 1567 states and 2138 transitions. [2021-02-24 00:03:02,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-24 00:03:02,418 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 167 [2021-02-24 00:03:02,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:03:02,428 INFO L225 Difference]: With dead ends: 1567 [2021-02-24 00:03:02,429 INFO L226 Difference]: Without dead ends: 887 [2021-02-24 00:03:02,433 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-02-24 00:03:02,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2021-02-24 00:03:02,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 861. [2021-02-24 00:03:02,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 861 states. [2021-02-24 00:03:02,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1098 transitions. [2021-02-24 00:03:02,590 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1098 transitions. Word has length 167 [2021-02-24 00:03:02,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:03:02,591 INFO L480 AbstractCegarLoop]: Abstraction has 861 states and 1098 transitions. [2021-02-24 00:03:02,592 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-24 00:03:02,592 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1098 transitions. [2021-02-24 00:03:02,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-02-24 00:03:02,595 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:03:02,595 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2021-02-24 00:03:02,596 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 00:03:02,596 INFO L428 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:03:02,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:03:02,597 INFO L82 PathProgramCache]: Analyzing trace with hash 492862256, now seen corresponding path program 1 times [2021-02-24 00:03:02,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:03:02,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [536103473] [2021-02-24 00:03:02,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:03:02,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:03:02,705 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-24 00:03:02,706 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-24 00:03:02,714 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-24 00:03:02,715 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-24 00:03:02,716 WARN L141 QuantifierPusher]: treesize reduction 2, result has 88.9 percent of original size [2021-02-24 00:03:02,717 WARN L147 QuantifierPusher]: treesize reduction 2, result has 88.9 percent of original size 16 [2021-02-24 00:03:02,730 WARN L141 QuantifierPusher]: treesize reduction 2, result has 88.9 percent of original size [2021-02-24 00:03:02,732 WARN L147 QuantifierPusher]: treesize reduction 2, result has 88.9 percent of original size 16 [2021-02-24 00:03:02,734 WARN L141 QuantifierPusher]: treesize reduction 20, result has 4.8 percent of original size [2021-02-24 00:03:02,734 WARN L147 QuantifierPusher]: treesize reduction 20, result has 4.8 percent of original size 1 [2021-02-24 00:03:02,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:02,735 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:03:02,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:03:02,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:03:02,801 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:02,802 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:03:02,802 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:02,803 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:03:02,809 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:02,810 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:03:02,820 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-24 00:03:02,821 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-24 00:03:02,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-24 00:03:02,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:03:02,884 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:02,885 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:03:02,894 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-24 00:03:02,894 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-24 00:03:02,913 WARN L141 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size [2021-02-24 00:03:02,917 WARN L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-02-24 00:03:02,932 WARN L141 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size [2021-02-24 00:03:02,934 WARN L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-02-24 00:03:02,952 WARN L141 QuantifierPusher]: treesize reduction 6, result has 76.9 percent of original size [2021-02-24 00:03:02,953 WARN L147 QuantifierPusher]: treesize reduction 6, result has 76.9 percent of original size 20 [2021-02-24 00:03:03,081 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 43 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:03:03,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [536103473] [2021-02-24 00:03:03,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:03:03,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-02-24 00:03:03,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555292252] [2021-02-24 00:03:03,085 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-24 00:03:03,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:03:03,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-24 00:03:03,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-02-24 00:03:03,087 INFO L87 Difference]: Start difference. First operand 861 states and 1098 transitions. Second operand 13 states. [2021-02-24 00:03:06,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:03:06,847 INFO L93 Difference]: Finished difference Result 2541 states and 3502 transitions. [2021-02-24 00:03:06,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-24 00:03:06,848 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 173 [2021-02-24 00:03:06,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:03:06,871 INFO L225 Difference]: With dead ends: 2541 [2021-02-24 00:03:06,871 INFO L226 Difference]: Without dead ends: 1660 [2021-02-24 00:03:06,877 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2021-02-24 00:03:06,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1660 states. [2021-02-24 00:03:07,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1660 to 1364. [2021-02-24 00:03:07,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1364 states. [2021-02-24 00:03:07,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1364 states to 1364 states and 1819 transitions. [2021-02-24 00:03:07,112 INFO L78 Accepts]: Start accepts. Automaton has 1364 states and 1819 transitions. Word has length 173 [2021-02-24 00:03:07,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:03:07,113 INFO L480 AbstractCegarLoop]: Abstraction has 1364 states and 1819 transitions. [2021-02-24 00:03:07,113 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-24 00:03:07,113 INFO L276 IsEmpty]: Start isEmpty. Operand 1364 states and 1819 transitions. [2021-02-24 00:03:07,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-24 00:03:07,116 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:03:07,117 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1] [2021-02-24 00:03:07,117 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 00:03:07,117 INFO L428 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:03:07,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:03:07,118 INFO L82 PathProgramCache]: Analyzing trace with hash -70077888, now seen corresponding path program 1 times [2021-02-24 00:03:07,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:03:07,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1169039512] [2021-02-24 00:03:07,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:03:07,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:03:07,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:07,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:03:07,198 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:07,198 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:03:07,199 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:07,200 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:03:07,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:03:07,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:03:07,259 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:07,259 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:03:07,260 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:07,261 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:03:07,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-24 00:03:07,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:03:07,314 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:07,315 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:03:07,322 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:07,322 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:03:07,375 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:03:07,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1169039512] [2021-02-24 00:03:07,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:03:07,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-24 00:03:07,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029510138] [2021-02-24 00:03:07,377 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-24 00:03:07,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:03:07,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-24 00:03:07,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-02-24 00:03:07,379 INFO L87 Difference]: Start difference. First operand 1364 states and 1819 transitions. Second operand 7 states. [2021-02-24 00:03:10,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:03:10,196 INFO L93 Difference]: Finished difference Result 3401 states and 4717 transitions. [2021-02-24 00:03:10,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-24 00:03:10,197 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 182 [2021-02-24 00:03:10,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:03:10,218 INFO L225 Difference]: With dead ends: 3401 [2021-02-24 00:03:10,219 INFO L226 Difference]: Without dead ends: 2060 [2021-02-24 00:03:10,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-02-24 00:03:10,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2060 states. [2021-02-24 00:03:10,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2060 to 1850. [2021-02-24 00:03:10,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1850 states. [2021-02-24 00:03:10,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1850 states to 1850 states and 2405 transitions. [2021-02-24 00:03:10,609 INFO L78 Accepts]: Start accepts. Automaton has 1850 states and 2405 transitions. Word has length 182 [2021-02-24 00:03:10,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:03:10,616 INFO L480 AbstractCegarLoop]: Abstraction has 1850 states and 2405 transitions. [2021-02-24 00:03:10,617 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-24 00:03:10,617 INFO L276 IsEmpty]: Start isEmpty. Operand 1850 states and 2405 transitions. [2021-02-24 00:03:10,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2021-02-24 00:03:10,622 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:03:10,623 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:03:10,623 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 00:03:10,623 INFO L428 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:03:10,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:03:10,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1550600236, now seen corresponding path program 1 times [2021-02-24 00:03:10,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:03:10,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2092676336] [2021-02-24 00:03:10,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:03:10,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:03:10,734 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:10,735 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:03:10,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:10,736 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:03:10,740 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:10,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:03:10,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:03:10,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:03:10,795 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:10,795 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:03:10,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-24 00:03:10,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:03:10,831 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:10,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:03:10,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:10,832 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:03:10,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-02-24 00:03:10,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:03:10,871 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:10,871 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:03:10,878 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:10,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:03:10,990 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-24 00:03:10,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2092676336] [2021-02-24 00:03:10,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:03:10,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-02-24 00:03:10,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769586568] [2021-02-24 00:03:10,993 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-24 00:03:10,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:03:10,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-24 00:03:10,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-02-24 00:03:10,995 INFO L87 Difference]: Start difference. First operand 1850 states and 2405 transitions. Second operand 7 states. [2021-02-24 00:03:14,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:03:14,723 INFO L93 Difference]: Finished difference Result 5117 states and 7024 transitions. [2021-02-24 00:03:14,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-24 00:03:14,723 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 252 [2021-02-24 00:03:14,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:03:14,762 INFO L225 Difference]: With dead ends: 5117 [2021-02-24 00:03:14,762 INFO L226 Difference]: Without dead ends: 3290 [2021-02-24 00:03:14,772 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-02-24 00:03:14,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3290 states. [2021-02-24 00:03:15,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3290 to 2784. [2021-02-24 00:03:15,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2784 states. [2021-02-24 00:03:15,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2784 states to 2784 states and 3638 transitions. [2021-02-24 00:03:15,333 INFO L78 Accepts]: Start accepts. Automaton has 2784 states and 3638 transitions. Word has length 252 [2021-02-24 00:03:15,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:03:15,334 INFO L480 AbstractCegarLoop]: Abstraction has 2784 states and 3638 transitions. [2021-02-24 00:03:15,334 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-24 00:03:15,334 INFO L276 IsEmpty]: Start isEmpty. Operand 2784 states and 3638 transitions. [2021-02-24 00:03:15,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2021-02-24 00:03:15,342 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:03:15,342 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:03:15,342 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-24 00:03:15,342 INFO L428 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:03:15,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:03:15,343 INFO L82 PathProgramCache]: Analyzing trace with hash -515518679, now seen corresponding path program 1 times [2021-02-24 00:03:15,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:03:15,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [405741227] [2021-02-24 00:03:15,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:03:15,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:03:15,405 WARN L141 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size [2021-02-24 00:03:15,405 WARN L147 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size 13 [2021-02-24 00:03:15,415 WARN L141 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size [2021-02-24 00:03:15,415 WARN L147 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size 13 [2021-02-24 00:03:15,416 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:15,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:03:15,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:03:15,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:03:15,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:15,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:03:15,476 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:15,476 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:03:15,483 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:15,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:03:15,494 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:15,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:03:15,508 WARN L141 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size [2021-02-24 00:03:15,509 WARN L147 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size 13 [2021-02-24 00:03:15,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-24 00:03:15,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:03:15,566 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:15,566 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:03:15,579 WARN L141 QuantifierPusher]: treesize reduction 3, result has 89.7 percent of original size [2021-02-24 00:03:15,580 WARN L147 QuantifierPusher]: treesize reduction 3, result has 89.7 percent of original size 26 [2021-02-24 00:03:15,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:15,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 00:03:15,619 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:15,620 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-24 00:03:15,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-24 00:03:15,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:03:15,682 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:15,683 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:03:15,800 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 120 proven. 72 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-02-24 00:03:15,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [405741227] [2021-02-24 00:03:15,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:03:15,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-02-24 00:03:15,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435343062] [2021-02-24 00:03:15,801 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-24 00:03:15,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:03:15,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-24 00:03:15,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-02-24 00:03:15,803 INFO L87 Difference]: Start difference. First operand 2784 states and 3638 transitions. Second operand 12 states. [2021-02-24 00:03:16,416 WARN L202 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2021-02-24 00:03:17,370 WARN L202 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 66 [2021-02-24 00:03:18,155 WARN L202 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 67 [2021-02-24 00:03:21,420 WARN L202 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2021-02-24 00:03:22,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:03:22,123 INFO L93 Difference]: Finished difference Result 6958 states and 8817 transitions. [2021-02-24 00:03:22,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-02-24 00:03:22,127 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 259 [2021-02-24 00:03:22,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:03:22,157 INFO L225 Difference]: With dead ends: 6958 [2021-02-24 00:03:22,157 INFO L226 Difference]: Without dead ends: 4207 [2021-02-24 00:03:22,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=164, Invalid=538, Unknown=0, NotChecked=0, Total=702 [2021-02-24 00:03:22,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4207 states. [2021-02-24 00:03:22,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4207 to 3805. [2021-02-24 00:03:22,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3805 states. [2021-02-24 00:03:22,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3805 states to 3805 states and 4598 transitions. [2021-02-24 00:03:22,986 INFO L78 Accepts]: Start accepts. Automaton has 3805 states and 4598 transitions. Word has length 259 [2021-02-24 00:03:22,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:03:22,986 INFO L480 AbstractCegarLoop]: Abstraction has 3805 states and 4598 transitions. [2021-02-24 00:03:22,987 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-24 00:03:22,987 INFO L276 IsEmpty]: Start isEmpty. Operand 3805 states and 4598 transitions. [2021-02-24 00:03:22,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2021-02-24 00:03:22,996 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:03:22,997 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2021-02-24 00:03:22,997 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-24 00:03:22,997 INFO L428 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:03:22,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:03:22,998 INFO L82 PathProgramCache]: Analyzing trace with hash 995925833, now seen corresponding path program 1 times [2021-02-24 00:03:22,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:03:22,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [582084996] [2021-02-24 00:03:22,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:03:23,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:03:23,119 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:23,119 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:03:23,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:23,125 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:03:23,128 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:23,129 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:03:23,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:03:23,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:03:23,184 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:23,184 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:03:23,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-24 00:03:23,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:03:23,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:23,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:03:23,238 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:23,238 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:03:23,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-02-24 00:03:23,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:03:23,286 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:23,287 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:03:23,294 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:23,295 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:03:23,543 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 213 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-24 00:03:23,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [582084996] [2021-02-24 00:03:23,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:03:23,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-02-24 00:03:23,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139380565] [2021-02-24 00:03:23,545 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-24 00:03:23,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:03:23,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-24 00:03:23,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-02-24 00:03:23,546 INFO L87 Difference]: Start difference. First operand 3805 states and 4598 transitions. Second operand 7 states. [2021-02-24 00:03:26,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:03:26,774 INFO L93 Difference]: Finished difference Result 8111 states and 10022 transitions. [2021-02-24 00:03:26,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-24 00:03:26,775 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 306 [2021-02-24 00:03:26,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:03:26,805 INFO L225 Difference]: With dead ends: 8111 [2021-02-24 00:03:26,806 INFO L226 Difference]: Without dead ends: 4479 [2021-02-24 00:03:26,818 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-02-24 00:03:26,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4479 states. [2021-02-24 00:03:27,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4479 to 4423. [2021-02-24 00:03:27,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4423 states. [2021-02-24 00:03:27,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4423 states to 4423 states and 5177 transitions. [2021-02-24 00:03:27,600 INFO L78 Accepts]: Start accepts. Automaton has 4423 states and 5177 transitions. Word has length 306 [2021-02-24 00:03:27,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:03:27,601 INFO L480 AbstractCegarLoop]: Abstraction has 4423 states and 5177 transitions. [2021-02-24 00:03:27,601 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-24 00:03:27,601 INFO L276 IsEmpty]: Start isEmpty. Operand 4423 states and 5177 transitions. [2021-02-24 00:03:27,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2021-02-24 00:03:27,612 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:03:27,613 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:03:27,613 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-24 00:03:27,613 INFO L428 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:03:27,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:03:27,614 INFO L82 PathProgramCache]: Analyzing trace with hash 872281622, now seen corresponding path program 1 times [2021-02-24 00:03:27,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:03:27,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [867534395] [2021-02-24 00:03:27,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:03:27,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:03:27,744 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-24 00:03:27,745 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-24 00:03:27,752 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-24 00:03:27,753 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-24 00:03:27,754 WARN L141 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size [2021-02-24 00:03:27,754 WARN L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-02-24 00:03:27,763 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-24 00:03:27,764 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-24 00:03:27,772 WARN L141 QuantifierPusher]: treesize reduction 2, result has 88.9 percent of original size [2021-02-24 00:03:27,773 WARN L147 QuantifierPusher]: treesize reduction 2, result has 88.9 percent of original size 16 [2021-02-24 00:03:27,787 WARN L141 QuantifierPusher]: treesize reduction 2, result has 88.9 percent of original size [2021-02-24 00:03:27,788 WARN L147 QuantifierPusher]: treesize reduction 2, result has 88.9 percent of original size 16 [2021-02-24 00:03:27,789 WARN L141 QuantifierPusher]: treesize reduction 20, result has 4.8 percent of original size [2021-02-24 00:03:27,789 WARN L147 QuantifierPusher]: treesize reduction 20, result has 4.8 percent of original size 1 [2021-02-24 00:03:27,789 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:27,790 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:03:27,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:03:27,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:03:27,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:27,852 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:03:27,853 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:27,853 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:03:27,861 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:27,862 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:03:27,874 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-24 00:03:27,874 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-24 00:03:27,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-24 00:03:27,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:03:27,921 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:27,922 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:03:27,932 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-24 00:03:27,933 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-24 00:03:27,949 WARN L141 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size [2021-02-24 00:03:27,949 WARN L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-02-24 00:03:27,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-02-24 00:03:27,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:03:28,013 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:28,014 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:03:28,015 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-24 00:03:28,016 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-24 00:03:28,017 WARN L141 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size [2021-02-24 00:03:28,017 WARN L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-02-24 00:03:28,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2021-02-24 00:03:28,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:03:28,084 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:28,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:03:28,086 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-24 00:03:28,086 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-24 00:03:28,087 WARN L141 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size [2021-02-24 00:03:28,088 WARN L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-02-24 00:03:28,109 WARN L141 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size [2021-02-24 00:03:28,109 WARN L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-02-24 00:03:28,134 WARN L141 QuantifierPusher]: treesize reduction 6, result has 76.9 percent of original size [2021-02-24 00:03:28,135 WARN L147 QuantifierPusher]: treesize reduction 6, result has 76.9 percent of original size 20 [2021-02-24 00:03:28,551 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 146 proven. 70 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2021-02-24 00:03:28,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [867534395] [2021-02-24 00:03:28,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:03:28,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-02-24 00:03:28,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308866214] [2021-02-24 00:03:28,553 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-24 00:03:28,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:03:28,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-24 00:03:28,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2021-02-24 00:03:28,554 INFO L87 Difference]: Start difference. First operand 4423 states and 5177 transitions. Second operand 17 states. [2021-02-24 00:03:28,753 WARN L202 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2021-02-24 00:03:29,433 WARN L202 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2021-02-24 00:03:30,113 WARN L202 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2021-02-24 00:03:30,551 WARN L202 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2021-02-24 00:03:36,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:03:36,831 INFO L93 Difference]: Finished difference Result 12393 states and 14773 transitions. [2021-02-24 00:03:36,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-02-24 00:03:36,832 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 347 [2021-02-24 00:03:36,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:03:36,881 INFO L225 Difference]: With dead ends: 12393 [2021-02-24 00:03:36,881 INFO L226 Difference]: Without dead ends: 8143 [2021-02-24 00:03:36,896 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=236, Invalid=694, Unknown=0, NotChecked=0, Total=930 [2021-02-24 00:03:36,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8143 states. [2021-02-24 00:03:38,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8143 to 6605. [2021-02-24 00:03:38,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6605 states. [2021-02-24 00:03:38,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6605 states to 6605 states and 7796 transitions. [2021-02-24 00:03:38,546 INFO L78 Accepts]: Start accepts. Automaton has 6605 states and 7796 transitions. Word has length 347 [2021-02-24 00:03:38,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:03:38,547 INFO L480 AbstractCegarLoop]: Abstraction has 6605 states and 7796 transitions. [2021-02-24 00:03:38,547 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-02-24 00:03:38,547 INFO L276 IsEmpty]: Start isEmpty. Operand 6605 states and 7796 transitions. [2021-02-24 00:03:38,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2021-02-24 00:03:38,563 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:03:38,563 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2021-02-24 00:03:38,564 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-24 00:03:38,564 INFO L428 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:03:38,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:03:38,564 INFO L82 PathProgramCache]: Analyzing trace with hash 78873409, now seen corresponding path program 1 times [2021-02-24 00:03:38,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:03:38,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1922745221] [2021-02-24 00:03:38,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:03:38,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:03:38,702 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-24 00:03:38,703 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-24 00:03:38,710 WARN L141 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size [2021-02-24 00:03:38,711 WARN L147 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size 13 [2021-02-24 00:03:38,725 WARN L141 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size [2021-02-24 00:03:38,726 WARN L147 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size 13 [2021-02-24 00:03:38,727 WARN L141 QuantifierPusher]: treesize reduction 3, result has 85.7 percent of original size [2021-02-24 00:03:38,727 WARN L147 QuantifierPusher]: treesize reduction 3, result has 85.7 percent of original size 18 [2021-02-24 00:03:38,745 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:38,745 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:03:38,752 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:38,753 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:03:38,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:03:38,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:03:38,829 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:38,829 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:03:38,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:38,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:03:38,839 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-24 00:03:38,840 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-24 00:03:38,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-24 00:03:38,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:03:38,910 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:38,910 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:03:38,911 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-24 00:03:38,912 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-24 00:03:38,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-02-24 00:03:38,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:03:38,996 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:38,996 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:03:38,997 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-24 00:03:38,998 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-24 00:03:38,998 WARN L141 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-02-24 00:03:38,999 WARN L147 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size 10 [2021-02-24 00:03:39,014 WARN L141 QuantifierPusher]: treesize reduction 6, result has 68.4 percent of original size [2021-02-24 00:03:39,014 WARN L147 QuantifierPusher]: treesize reduction 6, result has 68.4 percent of original size 13 [2021-02-24 00:03:39,248 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2021-02-24 00:03:39,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1922745221] [2021-02-24 00:03:39,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:03:39,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-02-24 00:03:39,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267856267] [2021-02-24 00:03:39,250 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-24 00:03:39,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:03:39,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-24 00:03:39,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-02-24 00:03:39,251 INFO L87 Difference]: Start difference. First operand 6605 states and 7796 transitions. Second operand 10 states. [2021-02-24 00:03:41,999 WARN L202 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2021-02-24 00:03:45,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:03:45,567 INFO L93 Difference]: Finished difference Result 14516 states and 17433 transitions. [2021-02-24 00:03:45,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-02-24 00:03:45,568 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 359 [2021-02-24 00:03:45,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:03:45,625 INFO L225 Difference]: With dead ends: 14516 [2021-02-24 00:03:45,625 INFO L226 Difference]: Without dead ends: 8044 [2021-02-24 00:03:45,645 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=127, Invalid=253, Unknown=0, NotChecked=0, Total=380 [2021-02-24 00:03:45,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8044 states. [2021-02-24 00:03:47,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8044 to 6930. [2021-02-24 00:03:47,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6930 states. [2021-02-24 00:03:47,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6930 states to 6930 states and 7952 transitions. [2021-02-24 00:03:47,143 INFO L78 Accepts]: Start accepts. Automaton has 6930 states and 7952 transitions. Word has length 359 [2021-02-24 00:03:47,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:03:47,143 INFO L480 AbstractCegarLoop]: Abstraction has 6930 states and 7952 transitions. [2021-02-24 00:03:47,143 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-24 00:03:47,143 INFO L276 IsEmpty]: Start isEmpty. Operand 6930 states and 7952 transitions. [2021-02-24 00:03:47,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2021-02-24 00:03:47,158 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:03:47,158 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:03:47,159 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-24 00:03:47,159 INFO L428 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:03:47,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:03:47,159 INFO L82 PathProgramCache]: Analyzing trace with hash -577793927, now seen corresponding path program 1 times [2021-02-24 00:03:47,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:03:47,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [728862883] [2021-02-24 00:03:47,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:03:47,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:03:47,267 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:47,268 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:03:47,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:47,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:03:47,272 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:47,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:03:47,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:03:47,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:03:47,333 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:47,334 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:03:47,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-24 00:03:47,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:03:47,382 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:47,383 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:03:47,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-02-24 00:03:47,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:03:47,419 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:47,420 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:03:47,423 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:47,423 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:03:47,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2021-02-24 00:03:47,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:03:47,458 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:47,458 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:03:47,466 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:47,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:03:47,606 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 349 proven. 2 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-02-24 00:03:47,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [728862883] [2021-02-24 00:03:47,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:03:47,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-02-24 00:03:47,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800655273] [2021-02-24 00:03:47,610 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-24 00:03:47,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:03:47,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-24 00:03:47,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-02-24 00:03:47,611 INFO L87 Difference]: Start difference. First operand 6930 states and 7952 transitions. Second operand 7 states. [2021-02-24 00:03:48,041 WARN L202 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-02-24 00:03:51,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:03:51,740 INFO L93 Difference]: Finished difference Result 13108 states and 15104 transitions. [2021-02-24 00:03:51,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-24 00:03:51,741 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 401 [2021-02-24 00:03:51,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:03:51,776 INFO L225 Difference]: With dead ends: 13108 [2021-02-24 00:03:51,776 INFO L226 Difference]: Without dead ends: 7138 [2021-02-24 00:03:51,795 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-02-24 00:03:51,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7138 states. [2021-02-24 00:03:53,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7138 to 6952. [2021-02-24 00:03:53,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6952 states. [2021-02-24 00:03:53,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6952 states to 6952 states and 7727 transitions. [2021-02-24 00:03:53,202 INFO L78 Accepts]: Start accepts. Automaton has 6952 states and 7727 transitions. Word has length 401 [2021-02-24 00:03:53,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:03:53,203 INFO L480 AbstractCegarLoop]: Abstraction has 6952 states and 7727 transitions. [2021-02-24 00:03:53,203 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-24 00:03:53,203 INFO L276 IsEmpty]: Start isEmpty. Operand 6952 states and 7727 transitions. [2021-02-24 00:03:53,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2021-02-24 00:03:53,217 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:03:53,217 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:03:53,218 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-24 00:03:53,218 INFO L428 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:03:53,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:03:53,218 INFO L82 PathProgramCache]: Analyzing trace with hash -124434078, now seen corresponding path program 1 times [2021-02-24 00:03:53,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:03:53,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [345246719] [2021-02-24 00:03:53,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:03:53,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:03:53,320 WARN L141 QuantifierPusher]: treesize reduction 17, result has 19.0 percent of original size [2021-02-24 00:03:53,321 WARN L147 QuantifierPusher]: treesize reduction 17, result has 19.0 percent of original size 4 [2021-02-24 00:03:53,324 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:53,325 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:03:53,326 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:53,326 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:03:53,327 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:53,327 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:03:53,331 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:53,332 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:03:53,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:03:53,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:03:53,391 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:53,392 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:03:53,392 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:53,393 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:03:53,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-24 00:03:53,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:03:53,444 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:53,445 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:03:53,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-02-24 00:03:53,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:03:53,479 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:53,480 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:03:53,480 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:53,481 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:03:53,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2021-02-24 00:03:53,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:03:53,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:53,520 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:03:53,528 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:03:53,529 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:03:53,629 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 344 proven. 16 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-02-24 00:03:53,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [345246719] [2021-02-24 00:03:53,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:03:53,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-02-24 00:03:53,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325657914] [2021-02-24 00:03:53,631 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-24 00:03:53,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:03:53,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-24 00:03:53,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-02-24 00:03:53,632 INFO L87 Difference]: Start difference. First operand 6952 states and 7727 transitions. Second operand 10 states. [2021-02-24 00:03:54,207 WARN L202 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2021-02-24 00:03:59,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:03:59,540 INFO L93 Difference]: Finished difference Result 15929 states and 17757 transitions. [2021-02-24 00:03:59,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-24 00:03:59,540 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 410 [2021-02-24 00:03:59,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:03:59,578 INFO L225 Difference]: With dead ends: 15929 [2021-02-24 00:03:59,578 INFO L226 Difference]: Without dead ends: 7218 [2021-02-24 00:03:59,599 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2021-02-24 00:03:59,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7218 states. [2021-02-24 00:04:01,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7218 to 5705. [2021-02-24 00:04:01,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5705 states. [2021-02-24 00:04:01,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5705 states to 5705 states and 6106 transitions. [2021-02-24 00:04:01,136 INFO L78 Accepts]: Start accepts. Automaton has 5705 states and 6106 transitions. Word has length 410 [2021-02-24 00:04:01,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:04:01,137 INFO L480 AbstractCegarLoop]: Abstraction has 5705 states and 6106 transitions. [2021-02-24 00:04:01,137 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-24 00:04:01,137 INFO L276 IsEmpty]: Start isEmpty. Operand 5705 states and 6106 transitions. [2021-02-24 00:04:01,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2021-02-24 00:04:01,149 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:04:01,149 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:04:01,149 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-24 00:04:01,149 INFO L428 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:04:01,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:04:01,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1691475042, now seen corresponding path program 1 times [2021-02-24 00:04:01,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:04:01,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1434404792] [2021-02-24 00:04:01,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:04:01,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:04:01,315 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-24 00:04:01,315 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-24 00:04:01,322 WARN L141 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size [2021-02-24 00:04:01,323 WARN L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-02-24 00:04:01,332 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-24 00:04:01,332 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-24 00:04:01,344 WARN L141 QuantifierPusher]: treesize reduction 2, result has 88.9 percent of original size [2021-02-24 00:04:01,345 WARN L147 QuantifierPusher]: treesize reduction 2, result has 88.9 percent of original size 16 [2021-02-24 00:04:01,361 WARN L141 QuantifierPusher]: treesize reduction 2, result has 88.9 percent of original size [2021-02-24 00:04:01,366 WARN L147 QuantifierPusher]: treesize reduction 2, result has 88.9 percent of original size 16 [2021-02-24 00:04:01,368 WARN L141 QuantifierPusher]: treesize reduction 20, result has 4.8 percent of original size [2021-02-24 00:04:01,368 WARN L147 QuantifierPusher]: treesize reduction 20, result has 4.8 percent of original size 1 [2021-02-24 00:04:01,368 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:04:01,369 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:04:01,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:04:01,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:04:01,449 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:04:01,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:04:01,450 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:04:01,451 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:04:01,458 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-24 00:04:01,458 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-24 00:04:01,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-24 00:04:01,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:04:01,492 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:04:01,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:04:01,493 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-24 00:04:01,494 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-24 00:04:01,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-02-24 00:04:01,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:04:01,521 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:04:01,522 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:04:01,523 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-24 00:04:01,523 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-24 00:04:01,524 WARN L141 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size [2021-02-24 00:04:01,525 WARN L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-02-24 00:04:01,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-02-24 00:04:01,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:04:01,561 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:04:01,562 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:04:01,571 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-24 00:04:01,572 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-24 00:04:01,586 WARN L141 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size [2021-02-24 00:04:01,587 WARN L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-02-24 00:04:01,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2021-02-24 00:04:01,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:04:01,644 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:04:01,645 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:04:01,646 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-24 00:04:01,646 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-24 00:04:01,647 WARN L141 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size [2021-02-24 00:04:01,648 WARN L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-02-24 00:04:01,667 WARN L141 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size [2021-02-24 00:04:01,668 WARN L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-02-24 00:04:01,691 WARN L141 QuantifierPusher]: treesize reduction 6, result has 76.9 percent of original size [2021-02-24 00:04:01,692 WARN L147 QuantifierPusher]: treesize reduction 6, result has 76.9 percent of original size 20 [2021-02-24 00:04:02,011 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 525 proven. 42 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-02-24 00:04:02,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1434404792] [2021-02-24 00:04:02,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:04:02,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-02-24 00:04:02,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593423657] [2021-02-24 00:04:02,013 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-24 00:04:02,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:04:02,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-24 00:04:02,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-02-24 00:04:02,014 INFO L87 Difference]: Start difference. First operand 5705 states and 6106 transitions. Second operand 15 states. [2021-02-24 00:04:08,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:04:08,760 INFO L93 Difference]: Finished difference Result 13131 states and 14153 transitions. [2021-02-24 00:04:08,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-24 00:04:08,761 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 430 [2021-02-24 00:04:08,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:04:08,802 INFO L225 Difference]: With dead ends: 13131 [2021-02-24 00:04:08,802 INFO L226 Difference]: Without dead ends: 7918 [2021-02-24 00:04:08,814 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2021-02-24 00:04:08,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7918 states. [2021-02-24 00:04:10,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7918 to 6645. [2021-02-24 00:04:10,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6645 states. [2021-02-24 00:04:10,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6645 states to 6645 states and 7139 transitions. [2021-02-24 00:04:10,454 INFO L78 Accepts]: Start accepts. Automaton has 6645 states and 7139 transitions. Word has length 430 [2021-02-24 00:04:10,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:04:10,454 INFO L480 AbstractCegarLoop]: Abstraction has 6645 states and 7139 transitions. [2021-02-24 00:04:10,454 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-24 00:04:10,454 INFO L276 IsEmpty]: Start isEmpty. Operand 6645 states and 7139 transitions. [2021-02-24 00:04:10,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2021-02-24 00:04:10,468 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:04:10,468 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2021-02-24 00:04:10,468 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-24 00:04:10,468 INFO L428 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:04:10,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:04:10,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1777709031, now seen corresponding path program 1 times [2021-02-24 00:04:10,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:04:10,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [218142716] [2021-02-24 00:04:10,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:04:10,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:04:10,641 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-24 00:04:10,641 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-24 00:04:10,649 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-24 00:04:10,650 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-24 00:04:10,651 WARN L141 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size [2021-02-24 00:04:10,652 WARN L147 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size 13 [2021-02-24 00:04:10,662 WARN L141 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size [2021-02-24 00:04:10,663 WARN L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-02-24 00:04:10,673 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-24 00:04:10,674 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-24 00:04:10,686 WARN L141 QuantifierPusher]: treesize reduction 2, result has 88.9 percent of original size [2021-02-24 00:04:10,687 WARN L147 QuantifierPusher]: treesize reduction 2, result has 88.9 percent of original size 16 [2021-02-24 00:04:10,704 WARN L141 QuantifierPusher]: treesize reduction 2, result has 88.9 percent of original size [2021-02-24 00:04:10,705 WARN L147 QuantifierPusher]: treesize reduction 2, result has 88.9 percent of original size 16 [2021-02-24 00:04:10,706 WARN L141 QuantifierPusher]: treesize reduction 20, result has 4.8 percent of original size [2021-02-24 00:04:10,706 WARN L147 QuantifierPusher]: treesize reduction 20, result has 4.8 percent of original size 1 [2021-02-24 00:04:10,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:04:10,707 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:04:10,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:04:10,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:04:10,772 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:04:10,774 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:04:10,775 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:04:10,775 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:04:10,784 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:04:10,785 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:04:10,797 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-24 00:04:10,798 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-24 00:04:10,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-24 00:04:10,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:04:10,872 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:04:10,872 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:04:10,873 WARN L141 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size [2021-02-24 00:04:10,874 WARN L147 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size 13 [2021-02-24 00:04:10,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-02-24 00:04:10,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:04:10,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:04:10,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:04:10,932 WARN L141 QuantifierPusher]: treesize reduction 3, result has 88.0 percent of original size [2021-02-24 00:04:10,933 WARN L147 QuantifierPusher]: treesize reduction 3, result has 88.0 percent of original size 22 [2021-02-24 00:04:10,953 WARN L141 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size [2021-02-24 00:04:10,954 WARN L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-02-24 00:04:10,974 WARN L141 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size [2021-02-24 00:04:10,975 WARN L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-02-24 00:04:11,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2021-02-24 00:04:11,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:04:11,166 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:04:11,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:04:11,180 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-24 00:04:11,181 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-24 00:04:11,207 WARN L141 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size [2021-02-24 00:04:11,207 WARN L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-02-24 00:04:11,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2021-02-24 00:04:11,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:04:11,298 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:04:11,299 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:04:11,299 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-24 00:04:11,300 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-24 00:04:11,301 WARN L141 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size [2021-02-24 00:04:11,302 WARN L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-02-24 00:04:11,326 WARN L141 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size [2021-02-24 00:04:11,328 WARN L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-02-24 00:04:11,356 WARN L141 QuantifierPusher]: treesize reduction 6, result has 76.9 percent of original size [2021-02-24 00:04:11,357 WARN L147 QuantifierPusher]: treesize reduction 6, result has 76.9 percent of original size 20 [2021-02-24 00:04:11,836 INFO L134 CoverageAnalysis]: Checked inductivity of 789 backedges. 458 proven. 253 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-02-24 00:04:11,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [218142716] [2021-02-24 00:04:11,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:04:11,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2021-02-24 00:04:11,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981474258] [2021-02-24 00:04:11,837 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-02-24 00:04:11,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:04:11,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-02-24 00:04:11,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2021-02-24 00:04:11,838 INFO L87 Difference]: Start difference. First operand 6645 states and 7139 transitions. Second operand 21 states. [2021-02-24 00:04:12,640 WARN L202 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 73 [2021-02-24 00:04:12,837 WARN L202 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2021-02-24 00:04:17,459 WARN L202 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2021-02-24 00:04:24,159 WARN L202 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2021-02-24 00:04:25,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:04:25,358 INFO L93 Difference]: Finished difference Result 16515 states and 17892 transitions. [2021-02-24 00:04:25,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-02-24 00:04:25,359 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 534 [2021-02-24 00:04:25,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:04:25,382 INFO L225 Difference]: With dead ends: 16515 [2021-02-24 00:04:25,383 INFO L226 Difference]: Without dead ends: 0 [2021-02-24 00:04:25,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1656 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=939, Invalid=4173, Unknown=0, NotChecked=0, Total=5112 [2021-02-24 00:04:25,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-24 00:04:25,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-24 00:04:25,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-24 00:04:25,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-24 00:04:25,419 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 534 [2021-02-24 00:04:25,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:04:25,419 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-24 00:04:25,419 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-02-24 00:04:25,420 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-24 00:04:25,420 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-24 00:04:25,420 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-02-24 00:04:25,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-24 00:04:27,305 WARN L202 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 87 [2021-02-24 00:04:28,583 WARN L202 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 82 [2021-02-24 00:05:13,985 WARN L202 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 368 DAG size of output: 270 [2021-02-24 00:05:14,772 WARN L202 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 364 DAG size of output: 270 [2021-02-24 00:05:17,274 WARN L202 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 364 DAG size of output: 270 [2021-02-24 00:05:17,825 WARN L202 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 364 DAG size of output: 270 [2021-02-24 00:05:23,489 WARN L202 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 368 DAG size of output: 270 [2021-02-24 00:05:44,884 WARN L202 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 368 DAG size of output: 270 [2021-02-24 00:05:45,332 WARN L202 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 368 DAG size of output: 270 [2021-02-24 00:05:45,769 WARN L202 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 368 DAG size of output: 270 [2021-02-24 00:05:56,233 WARN L202 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 368 DAG size of output: 270 [2021-02-24 00:06:10,046 WARN L202 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 368 DAG size of output: 270 [2021-02-24 00:06:49,092 WARN L202 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 178 [2021-02-24 00:06:49,286 WARN L202 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 186 [2021-02-24 00:06:49,490 WARN L202 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 193 [2021-02-24 00:06:50,051 WARN L202 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 176 [2021-02-24 00:06:50,328 WARN L202 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 208 [2021-02-24 00:06:50,526 WARN L202 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 186 [2021-02-24 00:06:51,169 WARN L202 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 173 [2021-02-24 00:06:51,886 WARN L202 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 189 [2021-02-24 00:06:52,472 WARN L202 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 209 [2021-02-24 00:06:52,649 WARN L202 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 163 [2021-02-24 00:06:52,871 WARN L202 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 162 [2021-02-24 00:06:53,157 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 165 [2021-02-24 00:06:53,623 WARN L202 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 162 [2021-02-24 00:06:54,116 WARN L202 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 209 [2021-02-24 00:06:54,640 WARN L202 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 178 [2021-02-24 00:06:54,836 WARN L202 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 186 [2021-02-24 00:06:55,557 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 176 [2021-02-24 00:06:55,827 WARN L202 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 208 [2021-02-24 00:06:56,023 WARN L202 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 186 [2021-02-24 00:06:56,676 WARN L202 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 173 [2021-02-24 00:06:57,375 WARN L202 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 189 [2021-02-24 00:06:57,980 WARN L202 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 209 [2021-02-24 00:06:58,153 WARN L202 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 163 [2021-02-24 00:06:58,634 WARN L202 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 165 [2021-02-24 00:06:59,101 WARN L202 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 162 [2021-02-24 00:06:59,600 WARN L202 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 209 [2021-02-24 00:07:56,624 WARN L202 SmtUtils]: Spent 5.47 s on a formula simplification. DAG size of input: 568 DAG size of output: 101 [2021-02-24 00:08:02,104 WARN L202 SmtUtils]: Spent 5.44 s on a formula simplification. DAG size of input: 568 DAG size of output: 101 [2021-02-24 00:08:04,604 WARN L202 SmtUtils]: Spent 2.48 s on a formula simplification. DAG size of input: 297 DAG size of output: 90 [2021-02-24 00:08:10,067 WARN L202 SmtUtils]: Spent 5.44 s on a formula simplification. DAG size of input: 568 DAG size of output: 101 [2021-02-24 00:08:15,522 WARN L202 SmtUtils]: Spent 5.43 s on a formula simplification. DAG size of input: 568 DAG size of output: 101 [2021-02-24 00:08:17,491 WARN L202 SmtUtils]: Spent 1.95 s on a formula simplification. DAG size of input: 282 DAG size of output: 89 [2021-02-24 00:08:19,362 WARN L202 SmtUtils]: Spent 1.85 s on a formula simplification. DAG size of input: 278 DAG size of output: 77 [2021-02-24 00:08:21,070 WARN L202 SmtUtils]: Spent 1.69 s on a formula simplification. DAG size of input: 298 DAG size of output: 82 [2021-02-24 00:08:23,296 WARN L202 SmtUtils]: Spent 2.21 s on a formula simplification. DAG size of input: 328 DAG size of output: 85 [2021-02-24 00:08:28,790 WARN L202 SmtUtils]: Spent 5.46 s on a formula simplification. DAG size of input: 568 DAG size of output: 101 [2021-02-24 00:08:31,037 WARN L202 SmtUtils]: Spent 2.23 s on a formula simplification. DAG size of input: 317 DAG size of output: 78 [2021-02-24 00:08:33,092 WARN L202 SmtUtils]: Spent 2.04 s on a formula simplification. DAG size of input: 326 DAG size of output: 88 [2021-02-24 00:08:35,007 WARN L202 SmtUtils]: Spent 1.90 s on a formula simplification. DAG size of input: 281 DAG size of output: 81 [2021-02-24 00:08:40,518 WARN L202 SmtUtils]: Spent 5.49 s on a formula simplification. DAG size of input: 568 DAG size of output: 101 [2021-02-24 00:08:42,599 WARN L202 SmtUtils]: Spent 2.07 s on a formula simplification. DAG size of input: 292 DAG size of output: 87 [2021-02-24 00:08:44,570 WARN L202 SmtUtils]: Spent 1.96 s on a formula simplification. DAG size of input: 282 DAG size of output: 89 [2021-02-24 00:08:46,706 WARN L202 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 301 DAG size of output: 82 [2021-02-24 00:08:52,235 WARN L202 SmtUtils]: Spent 5.50 s on a formula simplification. DAG size of input: 568 DAG size of output: 101 [2021-02-24 00:08:57,761 WARN L202 SmtUtils]: Spent 5.50 s on a formula simplification. DAG size of input: 568 DAG size of output: 101 [2021-02-24 00:09:03,298 WARN L202 SmtUtils]: Spent 5.52 s on a formula simplification. DAG size of input: 568 DAG size of output: 101 [2021-02-24 00:09:05,550 WARN L202 SmtUtils]: Spent 2.24 s on a formula simplification. DAG size of input: 296 DAG size of output: 89 [2021-02-24 00:09:11,083 WARN L202 SmtUtils]: Spent 5.51 s on a formula simplification. DAG size of input: 568 DAG size of output: 101 [2021-02-24 00:09:12,760 WARN L202 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 283 DAG size of output: 76 [2021-02-24 00:09:14,800 WARN L202 SmtUtils]: Spent 2.03 s on a formula simplification. DAG size of input: 293 DAG size of output: 84 [2021-02-24 00:09:16,743 WARN L202 SmtUtils]: Spent 1.93 s on a formula simplification. DAG size of input: 294 DAG size of output: 84 [2021-02-24 00:09:18,536 WARN L202 SmtUtils]: Spent 1.77 s on a formula simplification. DAG size of input: 316 DAG size of output: 82 [2021-02-24 00:09:24,117 WARN L202 SmtUtils]: Spent 5.56 s on a formula simplification. DAG size of input: 568 DAG size of output: 101 [2021-02-24 00:09:25,991 WARN L202 SmtUtils]: Spent 1.86 s on a formula simplification. DAG size of input: 283 DAG size of output: 86 [2021-02-24 00:09:27,933 WARN L202 SmtUtils]: Spent 1.93 s on a formula simplification. DAG size of input: 289 DAG size of output: 82 [2021-02-24 00:09:29,531 WARN L202 SmtUtils]: Spent 1.58 s on a formula simplification. DAG size of input: 303 DAG size of output: 76 [2021-02-24 00:09:31,048 WARN L202 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 307 DAG size of output: 69 [2021-02-24 00:09:35,507 WARN L202 SmtUtils]: Spent 4.44 s on a formula simplification. DAG size of input: 534 DAG size of output: 97 [2021-02-24 00:09:37,031 WARN L202 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 307 DAG size of output: 69 [2021-02-24 00:09:41,509 WARN L202 SmtUtils]: Spent 4.46 s on a formula simplification. DAG size of input: 534 DAG size of output: 97 [2021-02-24 00:09:45,971 WARN L202 SmtUtils]: Spent 4.45 s on a formula simplification. DAG size of input: 534 DAG size of output: 97 [2021-02-24 00:09:50,456 WARN L202 SmtUtils]: Spent 4.47 s on a formula simplification. DAG size of input: 534 DAG size of output: 97 [2021-02-24 00:09:51,989 WARN L202 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 307 DAG size of output: 69 [2021-02-24 00:09:53,509 WARN L202 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 307 DAG size of output: 69 [2021-02-24 00:09:57,934 WARN L202 SmtUtils]: Spent 4.41 s on a formula simplification. DAG size of input: 537 DAG size of output: 92 [2021-02-24 00:10:02,403 WARN L202 SmtUtils]: Spent 4.45 s on a formula simplification. DAG size of input: 537 DAG size of output: 95 [2021-02-24 00:10:03,947 WARN L202 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 307 DAG size of output: 69 [2021-02-24 00:10:05,513 WARN L202 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 307 DAG size of output: 69 [2021-02-24 00:10:10,030 WARN L202 SmtUtils]: Spent 4.50 s on a formula simplification. DAG size of input: 534 DAG size of output: 97 [2021-02-24 00:10:11,630 WARN L202 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 303 DAG size of output: 76 [2021-02-24 00:10:16,146 WARN L202 SmtUtils]: Spent 4.50 s on a formula simplification. DAG size of input: 534 DAG size of output: 97 [2021-02-24 00:10:20,669 WARN L202 SmtUtils]: Spent 4.51 s on a formula simplification. DAG size of input: 534 DAG size of output: 97 [2021-02-24 00:10:25,219 WARN L202 SmtUtils]: Spent 4.53 s on a formula simplification. DAG size of input: 534 DAG size of output: 97 [2021-02-24 00:10:26,834 WARN L202 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 303 DAG size of output: 76 [2021-02-24 00:10:31,389 WARN L202 SmtUtils]: Spent 4.49 s on a formula simplification. DAG size of input: 537 DAG size of output: 92 [2021-02-24 00:10:33,579 WARN L202 SmtUtils]: Spent 2.16 s on a formula simplification. DAG size of input: 290 DAG size of output: 84 [2021-02-24 00:10:39,327 WARN L202 SmtUtils]: Spent 5.73 s on a formula simplification. DAG size of input: 568 DAG size of output: 101 [2021-02-24 00:10:45,090 WARN L202 SmtUtils]: Spent 5.74 s on a formula simplification. DAG size of input: 568 DAG size of output: 101 [2021-02-24 00:10:47,062 WARN L202 SmtUtils]: Spent 1.96 s on a formula simplification. DAG size of input: 319 DAG size of output: 80 [2021-02-24 00:10:49,454 WARN L202 SmtUtils]: Spent 2.38 s on a formula simplification. DAG size of input: 325 DAG size of output: 88 [2021-02-24 00:10:52,049 WARN L202 SmtUtils]: Spent 2.58 s on a formula simplification. DAG size of input: 332 DAG size of output: 88 [2021-02-24 00:10:54,494 WARN L202 SmtUtils]: Spent 2.43 s on a formula simplification. DAG size of input: 329 DAG size of output: 79 [2021-02-24 00:10:56,429 WARN L202 SmtUtils]: Spent 1.92 s on a formula simplification. DAG size of input: 323 DAG size of output: 82 [2021-02-24 00:10:58,294 WARN L202 SmtUtils]: Spent 1.85 s on a formula simplification. DAG size of input: 278 DAG size of output: 82 [2021-02-24 00:11:04,083 WARN L202 SmtUtils]: Spent 5.77 s on a formula simplification. DAG size of input: 568 DAG size of output: 101 [2021-02-24 00:11:09,898 WARN L202 SmtUtils]: Spent 5.80 s on a formula simplification. DAG size of input: 568 DAG size of output: 101 [2021-02-24 00:11:11,884 WARN L202 SmtUtils]: Spent 1.97 s on a formula simplification. DAG size of input: 284 DAG size of output: 91 [2021-02-24 00:11:17,735 WARN L202 SmtUtils]: Spent 5.83 s on a formula simplification. DAG size of input: 568 DAG size of output: 101 [2021-02-24 00:11:19,802 WARN L202 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 285 DAG size of output: 80 [2021-02-24 00:11:21,610 WARN L202 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 284 DAG size of output: 87 [2021-02-24 00:11:23,968 WARN L202 SmtUtils]: Spent 2.34 s on a formula simplification. DAG size of input: 280 DAG size of output: 87 [2021-02-24 00:11:26,273 WARN L202 SmtUtils]: Spent 2.29 s on a formula simplification. DAG size of input: 326 DAG size of output: 80 [2021-02-24 00:11:27,876 WARN L202 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 307 DAG size of output: 69 [2021-02-24 00:11:29,899 WARN L202 SmtUtils]: Spent 2.01 s on a formula simplification. DAG size of input: 319 DAG size of output: 80 [2021-02-24 00:11:32,307 WARN L202 SmtUtils]: Spent 2.39 s on a formula simplification. DAG size of input: 326 DAG size of output: 78 [2021-02-24 00:11:34,494 WARN L202 SmtUtils]: Spent 2.17 s on a formula simplification. DAG size of input: 288 DAG size of output: 86 [2021-02-24 00:11:40,392 WARN L202 SmtUtils]: Spent 5.88 s on a formula simplification. DAG size of input: 568 DAG size of output: 101 [2021-02-24 00:11:43,392 WARN L202 SmtUtils]: Spent 2.99 s on a formula simplification. DAG size of input: 282 DAG size of output: 94 [2021-02-24 00:11:45,402 WARN L202 SmtUtils]: Spent 2.00 s on a formula simplification. DAG size of input: 313 DAG size of output: 80 [2021-02-24 00:11:51,370 WARN L202 SmtUtils]: Spent 5.95 s on a formula simplification. DAG size of input: 568 DAG size of output: 101 [2021-02-24 00:11:53,271 WARN L202 SmtUtils]: Spent 1.89 s on a formula simplification. DAG size of input: 280 DAG size of output: 78 [2021-02-24 00:11:55,550 WARN L202 SmtUtils]: Spent 2.26 s on a formula simplification. DAG size of input: 323 DAG size of output: 80 [2021-02-24 00:11:57,565 WARN L202 SmtUtils]: Spent 2.00 s on a formula simplification. DAG size of input: 285 DAG size of output: 80 [2021-02-24 00:11:59,761 WARN L202 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 331 DAG size of output: 84 [2021-02-24 00:12:01,881 WARN L202 SmtUtils]: Spent 2.11 s on a formula simplification. DAG size of input: 283 DAG size of output: 87 [2021-02-24 00:12:04,243 WARN L202 SmtUtils]: Spent 2.35 s on a formula simplification. DAG size of input: 294 DAG size of output: 95 [2021-02-24 00:12:06,939 WARN L202 SmtUtils]: Spent 2.68 s on a formula simplification. DAG size of input: 368 DAG size of output: 87 [2021-02-24 00:12:09,802 WARN L202 SmtUtils]: Spent 2.85 s on a formula simplification. DAG size of input: 298 DAG size of output: 89 [2021-02-24 00:12:11,797 WARN L202 SmtUtils]: Spent 1.98 s on a formula simplification. DAG size of input: 294 DAG size of output: 85 [2021-02-24 00:12:17,858 WARN L202 SmtUtils]: Spent 6.04 s on a formula simplification. DAG size of input: 568 DAG size of output: 101 [2021-02-24 00:12:20,415 WARN L202 SmtUtils]: Spent 2.54 s on a formula simplification. DAG size of input: 290 DAG size of output: 86 [2021-02-24 00:12:23,004 WARN L202 SmtUtils]: Spent 2.57 s on a formula simplification. DAG size of input: 314 DAG size of output: 81 [2021-02-24 00:12:25,157 WARN L202 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 301 DAG size of output: 87 [2021-02-24 00:12:27,523 WARN L202 SmtUtils]: Spent 2.35 s on a formula simplification. DAG size of input: 290 DAG size of output: 90 [2021-02-24 00:12:29,759 WARN L202 SmtUtils]: Spent 2.22 s on a formula simplification. DAG size of input: 315 DAG size of output: 84 [2021-02-24 00:12:36,157 WARN L202 SmtUtils]: Spent 6.38 s on a formula simplification. DAG size of input: 568 DAG size of output: 101 [2021-02-24 00:12:42,602 WARN L202 SmtUtils]: Spent 6.43 s on a formula simplification. DAG size of input: 568 DAG size of output: 101 [2021-02-24 00:12:49,024 WARN L202 SmtUtils]: Spent 6.40 s on a formula simplification. DAG size of input: 568 DAG size of output: 101 [2021-02-24 00:12:50,763 WARN L202 SmtUtils]: Spent 1.73 s on a formula simplification. DAG size of input: 307 DAG size of output: 69 [2021-02-24 00:12:52,551 WARN L202 SmtUtils]: Spent 1.77 s on a formula simplification. DAG size of input: 307 DAG size of output: 69 [2021-02-24 00:12:54,907 WARN L202 SmtUtils]: Spent 2.34 s on a formula simplification. DAG size of input: 319 DAG size of output: 80 [2021-02-24 00:12:57,888 WARN L202 SmtUtils]: Spent 2.97 s on a formula simplification. DAG size of input: 291 DAG size of output: 91 [2021-02-24 00:12:59,908 WARN L202 SmtUtils]: Spent 2.02 s on a formula simplification. DAG size of input: 250 DAG size of output: 61 [2021-02-24 00:13:02,054 WARN L202 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 280 DAG size of output: 80 [2021-02-24 00:13:04,189 WARN L202 SmtUtils]: Spent 2.11 s on a formula simplification. DAG size of input: 323 DAG size of output: 82 [2021-02-24 00:13:06,386 WARN L202 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 289 DAG size of output: 81 [2021-02-24 00:13:08,403 WARN L202 SmtUtils]: Spent 2.01 s on a formula simplification. DAG size of input: 251 DAG size of output: 61 [2021-02-24 00:13:14,902 WARN L202 SmtUtils]: Spent 6.48 s on a formula simplification. DAG size of input: 568 DAG size of output: 101 [2021-02-24 00:13:21,412 WARN L202 SmtUtils]: Spent 6.49 s on a formula simplification. DAG size of input: 568 DAG size of output: 101 [2021-02-24 00:13:23,391 WARN L202 SmtUtils]: Spent 1.97 s on a formula simplification. DAG size of input: 251 DAG size of output: 61 [2021-02-24 00:13:26,048 WARN L202 SmtUtils]: Spent 2.64 s on a formula simplification. DAG size of input: 302 DAG size of output: 82 [2021-02-24 00:13:28,097 WARN L202 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 251 DAG size of output: 61 [2021-02-24 00:13:34,669 WARN L202 SmtUtils]: Spent 6.55 s on a formula simplification. DAG size of input: 568 DAG size of output: 101 [2021-02-24 00:13:36,973 WARN L202 SmtUtils]: Spent 2.29 s on a formula simplification. DAG size of input: 282 DAG size of output: 86 [2021-02-24 00:13:43,580 WARN L202 SmtUtils]: Spent 6.59 s on a formula simplification. DAG size of input: 568 DAG size of output: 101 [2021-02-24 00:13:46,262 WARN L202 SmtUtils]: Spent 2.67 s on a formula simplification. DAG size of input: 324 DAG size of output: 79 [2021-02-24 00:13:52,947 WARN L202 SmtUtils]: Spent 6.67 s on a formula simplification. DAG size of input: 568 DAG size of output: 101 [2021-02-24 00:13:54,935 WARN L202 SmtUtils]: Spent 1.97 s on a formula simplification. DAG size of input: 280 DAG size of output: 81 [2021-02-24 00:13:56,712 WARN L202 SmtUtils]: Spent 1.76 s on a formula simplification. DAG size of input: 307 DAG size of output: 69 [2021-02-24 00:13:58,553 WARN L202 SmtUtils]: Spent 1.83 s on a formula simplification. DAG size of input: 307 DAG size of output: 69 [2021-02-24 00:14:03,866 WARN L202 SmtUtils]: Spent 5.30 s on a formula simplification. DAG size of input: 534 DAG size of output: 97 [2021-02-24 00:14:05,706 WARN L202 SmtUtils]: Spent 1.83 s on a formula simplification. DAG size of input: 307 DAG size of output: 69 [2021-02-24 00:14:07,772 WARN L202 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 250 DAG size of output: 61 [2021-02-24 00:14:10,309 WARN L202 SmtUtils]: Spent 2.52 s on a formula simplification. DAG size of input: 293 DAG size of output: 90 [2021-02-24 00:14:12,616 WARN L202 SmtUtils]: Spent 2.29 s on a formula simplification. DAG size of input: 285 DAG size of output: 89 [2021-02-24 00:14:14,954 WARN L202 SmtUtils]: Spent 2.32 s on a formula simplification. DAG size of input: 292 DAG size of output: 80 [2021-02-24 00:14:17,066 WARN L202 SmtUtils]: Spent 2.10 s on a formula simplification. DAG size of input: 298 DAG size of output: 83 [2021-02-24 00:14:19,283 WARN L202 SmtUtils]: Spent 2.20 s on a formula simplification. DAG size of input: 284 DAG size of output: 80 [2021-02-24 00:14:26,013 WARN L202 SmtUtils]: Spent 6.71 s on a formula simplification. DAG size of input: 568 DAG size of output: 101 [2021-02-24 00:14:28,288 WARN L202 SmtUtils]: Spent 2.26 s on a formula simplification. DAG size of input: 282 DAG size of output: 82 [2021-02-24 00:14:30,897 WARN L202 SmtUtils]: Spent 2.60 s on a formula simplification. DAG size of input: 290 DAG size of output: 93 [2021-02-24 00:14:32,745 WARN L202 SmtUtils]: Spent 1.83 s on a formula simplification. DAG size of input: 307 DAG size of output: 69 [2021-02-24 00:14:38,064 WARN L202 SmtUtils]: Spent 5.30 s on a formula simplification. DAG size of input: 537 DAG size of output: 92 [2021-02-24 00:14:40,004 WARN L202 SmtUtils]: Spent 1.93 s on a formula simplification. DAG size of input: 303 DAG size of output: 76 [2021-02-24 00:14:45,470 WARN L202 SmtUtils]: Spent 5.45 s on a formula simplification. DAG size of input: 534 DAG size of output: 97 [2021-02-24 00:14:50,922 WARN L202 SmtUtils]: Spent 5.43 s on a formula simplification. DAG size of input: 534 DAG size of output: 97 [2021-02-24 00:14:56,411 WARN L202 SmtUtils]: Spent 5.47 s on a formula simplification. DAG size of input: 534 DAG size of output: 97 [2021-02-24 00:14:58,275 WARN L202 SmtUtils]: Spent 1.85 s on a formula simplification. DAG size of input: 307 DAG size of output: 69 [2021-02-24 00:15:00,806 WARN L202 SmtUtils]: Spent 2.52 s on a formula simplification. DAG size of input: 328 DAG size of output: 79 [2021-02-24 00:15:03,204 WARN L202 SmtUtils]: Spent 2.38 s on a formula simplification. DAG size of input: 322 DAG size of output: 83 [2021-02-24 00:15:10,016 WARN L202 SmtUtils]: Spent 6.79 s on a formula simplification. DAG size of input: 568 DAG size of output: 101 [2021-02-24 00:15:16,820 WARN L202 SmtUtils]: Spent 6.78 s on a formula simplification. DAG size of input: 568 DAG size of output: 101 [2021-02-24 00:15:19,140 WARN L202 SmtUtils]: Spent 2.31 s on a formula simplification. DAG size of input: 295 DAG size of output: 84 [2021-02-24 00:15:21,626 WARN L202 SmtUtils]: Spent 2.46 s on a formula simplification. DAG size of input: 283 DAG size of output: 85 [2021-02-24 00:15:28,442 WARN L202 SmtUtils]: Spent 6.80 s on a formula simplification. DAG size of input: 568 DAG size of output: 101 [2021-02-24 00:15:35,213 WARN L202 SmtUtils]: Spent 6.75 s on a formula simplification. DAG size of input: 568 DAG size of output: 101 [2021-02-24 00:15:41,684 WARN L202 SmtUtils]: Spent 6.45 s on a formula simplification. DAG size of input: 568 DAG size of output: 101 [2021-02-24 00:15:48,047 WARN L202 SmtUtils]: Spent 6.35 s on a formula simplification. DAG size of input: 568 DAG size of output: 101 [2021-02-24 00:15:50,694 WARN L202 SmtUtils]: Spent 2.63 s on a formula simplification. DAG size of input: 329 DAG size of output: 79 [2021-02-24 00:15:53,232 WARN L202 SmtUtils]: Spent 2.52 s on a formula simplification. DAG size of input: 287 DAG size of output: 87 [2021-02-24 00:15:56,143 WARN L202 SmtUtils]: Spent 2.90 s on a formula simplification. DAG size of input: 291 DAG size of output: 91 [2021-02-24 00:15:58,239 WARN L202 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 278 DAG size of output: 79 [2021-02-24 00:16:00,498 WARN L202 SmtUtils]: Spent 2.24 s on a formula simplification. DAG size of input: 283 DAG size of output: 89 [2021-02-24 00:16:02,796 WARN L202 SmtUtils]: Spent 2.29 s on a formula simplification. DAG size of input: 319 DAG size of output: 80 [2021-02-24 00:16:04,968 WARN L202 SmtUtils]: Spent 2.16 s on a formula simplification. DAG size of input: 283 DAG size of output: 78 [2021-02-24 00:16:07,155 WARN L202 SmtUtils]: Spent 2.17 s on a formula simplification. DAG size of input: 318 DAG size of output: 78