/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/hard2_valuebound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 03:37:40,070 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 03:37:40,074 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 03:37:40,122 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-06 03:37:40,123 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-06 03:37:40,127 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-06 03:37:40,130 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-06 03:37:40,136 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-06 03:37:40,154 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-06 03:37:40,160 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-06 03:37:40,161 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-06 03:37:40,163 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-06 03:37:40,163 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 03:37:40,165 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 03:37:40,167 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 03:37:40,168 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 03:37:40,172 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 03:37:40,173 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 03:37:40,175 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 03:37:40,182 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 03:37:40,183 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 03:37:40,185 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 03:37:40,186 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 03:37:40,188 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 03:37:40,189 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-05-06 03:37:40,190 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-05-06 03:37:40,190 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-05-06 03:37:40,190 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-05-06 03:37:40,191 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-05-06 03:37:40,192 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-05-06 03:37:40,192 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-06 03:37:40,192 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-06 03:37:40,193 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-06 03:37:40,194 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-06 03:37:40,197 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-06 03:37:40,197 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-06 03:37:40,197 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-06 03:37:40,198 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-06 03:37:40,198 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 03:37:40,198 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 03:37:40,199 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 03:37:40,200 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-05-06 03:37:40,239 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 03:37:40,239 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 03:37:40,242 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-06 03:37:40,242 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-06 03:37:40,243 INFO L138 SettingsManager]: * Use SBE=true [2021-05-06 03:37:40,243 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 03:37:40,243 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 03:37:40,243 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 03:37:40,243 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 03:37:40,243 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 03:37:40,244 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 03:37:40,244 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 03:37:40,245 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 03:37:40,245 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 03:37:40,245 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 03:37:40,245 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 03:37:40,245 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 03:37:40,245 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 03:37:40,245 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 03:37:40,245 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 03:37:40,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 03:37:40,246 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 03:37:40,246 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-06 03:37:40,246 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-06 03:37:40,246 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-06 03:37:40,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-06 03:37:40,246 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-06 03:37:40,246 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-06 03:37:40,247 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 03:37:40,543 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 03:37:40,568 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 03:37:40,572 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 03:37:40,573 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 03:37:40,574 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 03:37:40,575 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/hard2_valuebound20.c [2021-05-06 03:37:40,630 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a95a0c347/1795e840126f455381bed714ce706bf8/FLAG04112e159 [2021-05-06 03:37:41,122 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 03:37:41,123 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard2_valuebound20.c [2021-05-06 03:37:41,138 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a95a0c347/1795e840126f455381bed714ce706bf8/FLAG04112e159 [2021-05-06 03:37:41,617 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a95a0c347/1795e840126f455381bed714ce706bf8 [2021-05-06 03:37:41,619 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 03:37:41,620 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-06 03:37:41,622 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 03:37:41,622 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 03:37:41,639 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 03:37:41,640 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 03:37:41" (1/1) ... [2021-05-06 03:37:41,641 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@414d21ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 03:37:41, skipping insertion in model container [2021-05-06 03:37:41,641 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 03:37:41" (1/1) ... [2021-05-06 03:37:41,648 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 03:37:41,659 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 03:37:41,789 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard2_valuebound20.c[526,539] [2021-05-06 03:37:41,802 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 03:37:41,810 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 03:37:41,821 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard2_valuebound20.c[526,539] [2021-05-06 03:37:41,827 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 03:37:41,881 INFO L208 MainTranslator]: Completed translation [2021-05-06 03:37:41,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 03:37:41 WrapperNode [2021-05-06 03:37:41,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 03:37:41,885 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 03:37:41,885 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 03:37:41,886 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 03:37:41,896 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 03:37:41" (1/1) ... [2021-05-06 03:37:41,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 03:37:41" (1/1) ... [2021-05-06 03:37:41,903 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 03:37:41" (1/1) ... [2021-05-06 03:37:41,903 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 03:37:41" (1/1) ... [2021-05-06 03:37:41,917 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 03:37:41" (1/1) ... [2021-05-06 03:37:41,921 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 03:37:41" (1/1) ... [2021-05-06 03:37:41,927 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 03:37:41" (1/1) ... [2021-05-06 03:37:41,931 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 03:37:41,932 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 03:37:41,932 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 03:37:41,932 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 03:37:41,933 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 03:37:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 03:37:42,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 03:37:42,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 03:37:42,015 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 03:37:42,015 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-06 03:37:42,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 03:37:42,016 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 03:37:42,016 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 03:37:42,016 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 03:37:42,017 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 03:37:42,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 03:37:42,017 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-06 03:37:42,017 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-06 03:37:42,018 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 03:37:42,018 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 03:37:42,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 03:37:42,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 03:37:42,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 03:37:42,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 03:37:42,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 03:37:42,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 03:37:42,353 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 03:37:42,354 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-05-06 03:37:42,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 03:37:42 BoogieIcfgContainer [2021-05-06 03:37:42,355 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 03:37:42,365 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 03:37:42,366 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 03:37:42,368 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 03:37:42,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 03:37:41" (1/3) ... [2021-05-06 03:37:42,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@607da4be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 03:37:42, skipping insertion in model container [2021-05-06 03:37:42,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 03:37:41" (2/3) ... [2021-05-06 03:37:42,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@607da4be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 03:37:42, skipping insertion in model container [2021-05-06 03:37:42,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 03:37:42" (3/3) ... [2021-05-06 03:37:42,371 INFO L111 eAbstractionObserver]: Analyzing ICFG hard2_valuebound20.c [2021-05-06 03:37:42,376 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-06 03:37:42,379 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 03:37:42,392 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 03:37:42,411 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 03:37:42,411 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-06 03:37:42,412 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-06 03:37:42,412 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 03:37:42,412 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 03:37:42,412 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 03:37:42,412 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 03:37:42,412 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 03:37:42,427 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-06 03:37:42,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-06 03:37:42,431 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 03:37:42,432 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 03:37:42,432 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 03:37:42,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 03:37:42,437 INFO L82 PathProgramCache]: Analyzing trace with hash -977830905, now seen corresponding path program 1 times [2021-05-06 03:37:42,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 03:37:42,445 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223696519] [2021-05-06 03:37:42,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 03:37:42,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 03:37:42,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 03:37:42,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 03:37:42,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-06 03:37:42,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 03:37:42,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 03:37:42,751 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 03:37:42,751 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223696519] [2021-05-06 03:37:42,752 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223696519] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 03:37:42,753 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 03:37:42,753 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-06 03:37:42,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672492135] [2021-05-06 03:37:42,757 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-06 03:37:42,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 03:37:42,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-06 03:37:42,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 03:37:42,773 INFO L87 Difference]: Start difference. First operand has 35 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-06 03:37:42,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 03:37:42,936 INFO L93 Difference]: Finished difference Result 61 states and 95 transitions. [2021-05-06 03:37:42,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-06 03:37:42,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-05-06 03:37:42,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 03:37:42,947 INFO L225 Difference]: With dead ends: 61 [2021-05-06 03:37:42,947 INFO L226 Difference]: Without dead ends: 30 [2021-05-06 03:37:42,950 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 62.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 03:37:42,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-05-06 03:37:43,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-05-06 03:37:43,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-06 03:37:43,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2021-05-06 03:37:43,008 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 17 [2021-05-06 03:37:43,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 03:37:43,010 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2021-05-06 03:37:43,010 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-06 03:37:43,011 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2021-05-06 03:37:43,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-06 03:37:43,011 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 03:37:43,012 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 03:37:43,012 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 03:37:43,012 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 03:37:43,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 03:37:43,013 INFO L82 PathProgramCache]: Analyzing trace with hash -297772535, now seen corresponding path program 1 times [2021-05-06 03:37:43,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 03:37:43,014 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682937675] [2021-05-06 03:37:43,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 03:37:43,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 03:37:43,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 03:37:43,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 03:37:43,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-06 03:37:43,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 03:37:43,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 03:37:43,163 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 03:37:43,164 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682937675] [2021-05-06 03:37:43,164 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682937675] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 03:37:43,164 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 03:37:43,164 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-06 03:37:43,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644707753] [2021-05-06 03:37:43,165 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-06 03:37:43,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 03:37:43,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-06 03:37:43,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-06 03:37:43,169 INFO L87 Difference]: Start difference. First operand 30 states and 38 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-06 03:37:43,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 03:37:43,632 INFO L93 Difference]: Finished difference Result 43 states and 55 transitions. [2021-05-06 03:37:43,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-06 03:37:43,633 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-05-06 03:37:43,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 03:37:43,634 INFO L225 Difference]: With dead ends: 43 [2021-05-06 03:37:43,634 INFO L226 Difference]: Without dead ends: 41 [2021-05-06 03:37:43,636 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 201.0ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-05-06 03:37:43,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-05-06 03:37:43,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 34. [2021-05-06 03:37:43,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 10 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-06 03:37:43,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2021-05-06 03:37:43,646 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 17 [2021-05-06 03:37:43,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 03:37:43,647 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2021-05-06 03:37:43,647 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-06 03:37:43,647 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2021-05-06 03:37:43,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-05-06 03:37:43,648 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 03:37:43,648 INFO L523 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 03:37:43,648 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-06 03:37:43,648 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 03:37:43,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 03:37:43,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1294462534, now seen corresponding path program 1 times [2021-05-06 03:37:43,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 03:37:43,649 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247691598] [2021-05-06 03:37:43,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 03:37:43,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 03:37:43,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 03:37:43,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 03:37:43,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-06 03:37:43,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 03:37:43,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-06 03:37:43,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 03:37:43,746 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 03:37:43,746 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 03:37:43,747 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247691598] [2021-05-06 03:37:43,747 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247691598] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 03:37:43,747 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 03:37:43,747 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-06 03:37:43,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908027579] [2021-05-06 03:37:43,748 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-06 03:37:43,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 03:37:43,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-06 03:37:43,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-06 03:37:43,749 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-06 03:37:44,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 03:37:44,064 INFO L93 Difference]: Finished difference Result 47 states and 58 transitions. [2021-05-06 03:37:44,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-06 03:37:44,065 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2021-05-06 03:37:44,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 03:37:44,066 INFO L225 Difference]: With dead ends: 47 [2021-05-06 03:37:44,066 INFO L226 Difference]: Without dead ends: 45 [2021-05-06 03:37:44,067 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 150.0ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-05-06 03:37:44,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-05-06 03:37:44,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 38. [2021-05-06 03:37:44,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-06 03:37:44,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2021-05-06 03:37:44,076 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 22 [2021-05-06 03:37:44,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 03:37:44,076 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2021-05-06 03:37:44,076 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-06 03:37:44,077 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2021-05-06 03:37:44,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-05-06 03:37:44,077 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 03:37:44,077 INFO L523 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 03:37:44,078 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-06 03:37:44,078 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 03:37:44,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 03:37:44,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1449027479, now seen corresponding path program 1 times [2021-05-06 03:37:44,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 03:37:44,079 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028005937] [2021-05-06 03:37:44,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 03:37:44,090 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 03:37:44,090 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1359498244] [2021-05-06 03:37:44,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 03:37:44,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 03:37:44,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-06 03:37:44,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 03:37:44,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:44,382 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 03:37:44,382 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 03:37:44,382 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028005937] [2021-05-06 03:37:44,383 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 03:37:44,383 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359498244] [2021-05-06 03:37:44,383 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359498244] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 03:37:44,383 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 03:37:44,383 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-06 03:37:44,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541248687] [2021-05-06 03:37:44,385 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-06 03:37:44,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 03:37:44,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-06 03:37:44,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-06 03:37:44,389 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-06 03:37:44,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 03:37:44,472 INFO L93 Difference]: Finished difference Result 66 states and 84 transitions. [2021-05-06 03:37:44,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-06 03:37:44,473 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 27 [2021-05-06 03:37:44,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 03:37:44,475 INFO L225 Difference]: With dead ends: 66 [2021-05-06 03:37:44,475 INFO L226 Difference]: Without dead ends: 52 [2021-05-06 03:37:44,476 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.3ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-06 03:37:44,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-05-06 03:37:44,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-05-06 03:37:44,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 31 states have internal predecessors, (34), 16 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-05-06 03:37:44,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 63 transitions. [2021-05-06 03:37:44,497 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 63 transitions. Word has length 27 [2021-05-06 03:37:44,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 03:37:44,497 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 63 transitions. [2021-05-06 03:37:44,497 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-06 03:37:44,497 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 63 transitions. [2021-05-06 03:37:44,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-05-06 03:37:44,499 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 03:37:44,499 INFO L523 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 03:37:44,709 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 03:37:44,709 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 03:37:44,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 03:37:44,710 INFO L82 PathProgramCache]: Analyzing trace with hash 905213191, now seen corresponding path program 1 times [2021-05-06 03:37:44,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 03:37:44,710 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517197071] [2021-05-06 03:37:44,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 03:37:44,720 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 03:37:44,720 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1104152057] [2021-05-06 03:37:44,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 03:37:44,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 03:37:44,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-06 03:37:44,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 03:37:44,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:44,954 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-05-06 03:37:44,954 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 03:37:44,954 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517197071] [2021-05-06 03:37:44,955 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 03:37:44,955 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104152057] [2021-05-06 03:37:44,955 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104152057] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 03:37:44,955 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 03:37:44,955 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-06 03:37:44,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550992268] [2021-05-06 03:37:44,956 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-06 03:37:44,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 03:37:44,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-06 03:37:44,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-06 03:37:44,957 INFO L87 Difference]: Start difference. First operand 52 states and 63 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-06 03:37:45,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 03:37:45,026 INFO L93 Difference]: Finished difference Result 65 states and 80 transitions. [2021-05-06 03:37:45,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-06 03:37:45,029 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 34 [2021-05-06 03:37:45,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 03:37:45,032 INFO L225 Difference]: With dead ends: 65 [2021-05-06 03:37:45,032 INFO L226 Difference]: Without dead ends: 58 [2021-05-06 03:37:45,033 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.3ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-06 03:37:45,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-05-06 03:37:45,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2021-05-06 03:37:45,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 35 states have internal predecessors, (39), 16 states have call successors, (16), 8 states have call predecessors, (16), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2021-05-06 03:37:45,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 69 transitions. [2021-05-06 03:37:45,055 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 69 transitions. Word has length 34 [2021-05-06 03:37:45,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 03:37:45,060 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 69 transitions. [2021-05-06 03:37:45,061 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-06 03:37:45,061 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 69 transitions. [2021-05-06 03:37:45,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-05-06 03:37:45,063 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 03:37:45,064 INFO L523 BasicCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 03:37:45,271 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 03:37:45,272 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 03:37:45,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 03:37:45,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1576096488, now seen corresponding path program 1 times [2021-05-06 03:37:45,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 03:37:45,273 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049231162] [2021-05-06 03:37:45,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 03:37:45,282 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 03:37:45,283 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1123077804] [2021-05-06 03:37:45,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 03:37:45,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 03:37:45,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-06 03:37:45,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 03:37:45,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:45,489 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-05-06 03:37:45,489 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 03:37:45,489 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049231162] [2021-05-06 03:37:45,489 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 03:37:45,489 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123077804] [2021-05-06 03:37:45,490 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123077804] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 03:37:45,490 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 03:37:45,490 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-05-06 03:37:45,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811473271] [2021-05-06 03:37:45,490 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-06 03:37:45,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 03:37:45,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-06 03:37:45,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-06 03:37:45,491 INFO L87 Difference]: Start difference. First operand 57 states and 69 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-05-06 03:37:45,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 03:37:45,618 INFO L93 Difference]: Finished difference Result 105 states and 141 transitions. [2021-05-06 03:37:45,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-06 03:37:45,618 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 44 [2021-05-06 03:37:45,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 03:37:45,622 INFO L225 Difference]: With dead ends: 105 [2021-05-06 03:37:45,622 INFO L226 Difference]: Without dead ends: 76 [2021-05-06 03:37:45,627 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.0ms TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-05-06 03:37:45,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-05-06 03:37:45,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2021-05-06 03:37:45,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 46 states have internal predecessors, (50), 24 states have call successors, (24), 9 states have call predecessors, (24), 8 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2021-05-06 03:37:45,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 95 transitions. [2021-05-06 03:37:45,656 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 95 transitions. Word has length 44 [2021-05-06 03:37:45,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 03:37:45,656 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 95 transitions. [2021-05-06 03:37:45,656 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-05-06 03:37:45,656 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 95 transitions. [2021-05-06 03:37:45,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-05-06 03:37:45,657 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 03:37:45,657 INFO L523 BasicCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 03:37:45,858 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 03:37:45,858 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 03:37:45,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 03:37:45,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1230656439, now seen corresponding path program 2 times [2021-05-06 03:37:45,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 03:37:45,859 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027600] [2021-05-06 03:37:45,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 03:37:45,870 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 03:37:45,871 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [441544224] [2021-05-06 03:37:45,871 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 03:37:45,946 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 03:37:45,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 03:37:45,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2021-05-06 03:37:45,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 03:37:46,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:46,141 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 16 proven. 13 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-05-06 03:37:46,142 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 03:37:46,142 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027600] [2021-05-06 03:37:46,142 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 03:37:46,142 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441544224] [2021-05-06 03:37:46,142 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441544224] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 03:37:46,142 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 03:37:46,142 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-05-06 03:37:46,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462698111] [2021-05-06 03:37:46,143 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-06 03:37:46,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 03:37:46,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-06 03:37:46,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-06 03:37:46,144 INFO L87 Difference]: Start difference. First operand 76 states and 95 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 4 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-05-06 03:37:46,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 03:37:46,303 INFO L93 Difference]: Finished difference Result 134 states and 185 transitions. [2021-05-06 03:37:46,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-06 03:37:46,304 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 4 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 61 [2021-05-06 03:37:46,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 03:37:46,305 INFO L225 Difference]: With dead ends: 134 [2021-05-06 03:37:46,305 INFO L226 Difference]: Without dead ends: 105 [2021-05-06 03:37:46,306 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.6ms TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-05-06 03:37:46,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-05-06 03:37:46,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 103. [2021-05-06 03:37:46,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 58 states have (on average 1.1724137931034482) internal successors, (68), 62 states have internal predecessors, (68), 35 states have call successors, (35), 10 states have call predecessors, (35), 9 states have return successors, (32), 30 states have call predecessors, (32), 32 states have call successors, (32) [2021-05-06 03:37:46,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 135 transitions. [2021-05-06 03:37:46,332 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 135 transitions. Word has length 61 [2021-05-06 03:37:46,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 03:37:46,333 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 135 transitions. [2021-05-06 03:37:46,333 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 4 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-05-06 03:37:46,334 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 135 transitions. [2021-05-06 03:37:46,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-05-06 03:37:46,337 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 03:37:46,337 INFO L523 BasicCegarLoop]: trace histogram [9, 8, 8, 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] [2021-05-06 03:37:46,552 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 03:37:46,553 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 03:37:46,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 03:37:46,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1615471943, now seen corresponding path program 1 times [2021-05-06 03:37:46,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 03:37:46,554 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647224247] [2021-05-06 03:37:46,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 03:37:46,562 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 03:37:46,562 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1779808141] [2021-05-06 03:37:46,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 03:37:46,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 03:37:46,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 25 conjunts are in the unsatisfiable core [2021-05-06 03:37:46,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 03:37:46,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:46,858 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-05-06 03:37:46,858 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 03:37:46,858 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647224247] [2021-05-06 03:37:46,858 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 03:37:46,858 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779808141] [2021-05-06 03:37:46,859 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779808141] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 03:37:46,859 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 03:37:46,859 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-05-06 03:37:46,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382756503] [2021-05-06 03:37:46,862 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-06 03:37:46,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 03:37:46,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-06 03:37:46,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-06 03:37:46,863 INFO L87 Difference]: Start difference. First operand 103 states and 135 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 4 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-05-06 03:37:46,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 03:37:46,994 INFO L93 Difference]: Finished difference Result 127 states and 154 transitions. [2021-05-06 03:37:46,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-06 03:37:46,996 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 4 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 64 [2021-05-06 03:37:46,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 03:37:47,002 INFO L225 Difference]: With dead ends: 127 [2021-05-06 03:37:47,002 INFO L226 Difference]: Without dead ends: 125 [2021-05-06 03:37:47,002 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.8ms TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-05-06 03:37:47,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-05-06 03:37:47,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 123. [2021-05-06 03:37:47,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 73 states have (on average 1.1369863013698631) internal successors, (83), 77 states have internal predecessors, (83), 35 states have call successors, (35), 15 states have call predecessors, (35), 14 states have return successors, (32), 30 states have call predecessors, (32), 32 states have call successors, (32) [2021-05-06 03:37:47,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 150 transitions. [2021-05-06 03:37:47,019 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 150 transitions. Word has length 64 [2021-05-06 03:37:47,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 03:37:47,020 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 150 transitions. [2021-05-06 03:37:47,020 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 4 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-05-06 03:37:47,020 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 150 transitions. [2021-05-06 03:37:47,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-05-06 03:37:47,024 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 03:37:47,025 INFO L523 BasicCegarLoop]: trace histogram [11, 10, 10, 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] [2021-05-06 03:37:47,250 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 03:37:47,250 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 03:37:47,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 03:37:47,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1554666020, now seen corresponding path program 1 times [2021-05-06 03:37:47,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 03:37:47,251 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879351365] [2021-05-06 03:37:47,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 03:37:47,257 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 03:37:47,257 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [315197340] [2021-05-06 03:37:47,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 03:37:47,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 03:37:47,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 27 conjunts are in the unsatisfiable core [2021-05-06 03:37:47,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 03:37:47,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:47,561 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-05-06 03:37:47,561 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 03:37:47,561 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879351365] [2021-05-06 03:37:47,561 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 03:37:47,561 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315197340] [2021-05-06 03:37:47,562 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315197340] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 03:37:47,562 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 03:37:47,562 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-05-06 03:37:47,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789552561] [2021-05-06 03:37:47,562 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-06 03:37:47,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 03:37:47,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-06 03:37:47,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-06 03:37:47,563 INFO L87 Difference]: Start difference. First operand 123 states and 150 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 5 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2021-05-06 03:37:47,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 03:37:47,674 INFO L93 Difference]: Finished difference Result 131 states and 157 transitions. [2021-05-06 03:37:47,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-06 03:37:47,674 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 5 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 75 [2021-05-06 03:37:47,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 03:37:47,676 INFO L225 Difference]: With dead ends: 131 [2021-05-06 03:37:47,676 INFO L226 Difference]: Without dead ends: 103 [2021-05-06 03:37:47,676 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 54.1ms TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-05-06 03:37:47,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-05-06 03:37:47,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2021-05-06 03:37:47,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 60 states have (on average 1.15) internal successors, (69), 63 states have internal predecessors, (69), 31 states have call successors, (31), 12 states have call predecessors, (31), 11 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2021-05-06 03:37:47,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 128 transitions. [2021-05-06 03:37:47,688 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 128 transitions. Word has length 75 [2021-05-06 03:37:47,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 03:37:47,688 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 128 transitions. [2021-05-06 03:37:47,688 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 5 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2021-05-06 03:37:47,688 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 128 transitions. [2021-05-06 03:37:47,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-05-06 03:37:47,689 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 03:37:47,689 INFO L523 BasicCegarLoop]: trace histogram [12, 11, 11, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 03:37:47,915 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 03:37:47,916 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 03:37:47,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 03:37:47,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1862740680, now seen corresponding path program 3 times [2021-05-06 03:37:47,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 03:37:47,916 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265500558] [2021-05-06 03:37:47,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 03:37:47,924 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 03:37:47,924 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [423842916] [2021-05-06 03:37:47,924 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 03:37:48,006 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-05-06 03:37:48,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 03:37:48,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 14 conjunts are in the unsatisfiable core [2021-05-06 03:37:48,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 03:37:48,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:48,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:48,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:48,218 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 59 proven. 7 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2021-05-06 03:37:48,218 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 03:37:48,218 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265500558] [2021-05-06 03:37:48,219 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 03:37:48,219 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423842916] [2021-05-06 03:37:48,219 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423842916] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 03:37:48,219 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 03:37:48,219 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-05-06 03:37:48,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461513905] [2021-05-06 03:37:48,219 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-06 03:37:48,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 03:37:48,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-06 03:37:48,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-05-06 03:37:48,220 INFO L87 Difference]: Start difference. First operand 103 states and 128 transitions. Second operand has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2021-05-06 03:37:48,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 03:37:48,371 INFO L93 Difference]: Finished difference Result 123 states and 150 transitions. [2021-05-06 03:37:48,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-06 03:37:48,371 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 78 [2021-05-06 03:37:48,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 03:37:48,372 INFO L225 Difference]: With dead ends: 123 [2021-05-06 03:37:48,372 INFO L226 Difference]: Without dead ends: 111 [2021-05-06 03:37:48,373 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 61.5ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-05-06 03:37:48,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-05-06 03:37:48,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2021-05-06 03:37:48,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 65 states have (on average 1.1384615384615384) internal successors, (74), 68 states have internal predecessors, (74), 33 states have call successors, (33), 13 states have call predecessors, (33), 12 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2021-05-06 03:37:48,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 137 transitions. [2021-05-06 03:37:48,388 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 137 transitions. Word has length 78 [2021-05-06 03:37:48,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 03:37:48,389 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 137 transitions. [2021-05-06 03:37:48,389 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2021-05-06 03:37:48,389 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 137 transitions. [2021-05-06 03:37:48,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-05-06 03:37:48,390 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 03:37:48,390 INFO L523 BasicCegarLoop]: trace histogram [12, 11, 11, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 03:37:48,616 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-05-06 03:37:48,616 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 03:37:48,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 03:37:48,617 INFO L82 PathProgramCache]: Analyzing trace with hash 330473976, now seen corresponding path program 2 times [2021-05-06 03:37:48,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 03:37:48,617 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730670513] [2021-05-06 03:37:48,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 03:37:48,625 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 03:37:48,625 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [637855355] [2021-05-06 03:37:48,625 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 03:37:48,715 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 03:37:48,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 03:37:48,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 29 conjunts are in the unsatisfiable core [2021-05-06 03:37:48,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 03:37:48,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:48,961 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 22 proven. 17 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2021-05-06 03:37:48,962 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 03:37:48,962 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730670513] [2021-05-06 03:37:48,962 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 03:37:48,962 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637855355] [2021-05-06 03:37:48,962 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637855355] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 03:37:48,962 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 03:37:48,962 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-05-06 03:37:48,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766725938] [2021-05-06 03:37:48,963 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-06 03:37:48,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 03:37:48,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-06 03:37:48,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-05-06 03:37:48,964 INFO L87 Difference]: Start difference. First operand 111 states and 137 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 5 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-05-06 03:37:49,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 03:37:49,162 INFO L93 Difference]: Finished difference Result 138 states and 161 transitions. [2021-05-06 03:37:49,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-06 03:37:49,163 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 5 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 81 [2021-05-06 03:37:49,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 03:37:49,164 INFO L225 Difference]: With dead ends: 138 [2021-05-06 03:37:49,164 INFO L226 Difference]: Without dead ends: 136 [2021-05-06 03:37:49,165 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 75.6ms TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-05-06 03:37:49,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-05-06 03:37:49,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 133. [2021-05-06 03:37:49,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 81 states have (on average 1.1111111111111112) internal successors, (90), 85 states have internal predecessors, (90), 34 states have call successors, (34), 18 states have call predecessors, (34), 17 states have return successors, (31), 29 states have call predecessors, (31), 31 states have call successors, (31) [2021-05-06 03:37:49,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 155 transitions. [2021-05-06 03:37:49,181 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 155 transitions. Word has length 81 [2021-05-06 03:37:49,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 03:37:49,181 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 155 transitions. [2021-05-06 03:37:49,181 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 5 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-05-06 03:37:49,182 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 155 transitions. [2021-05-06 03:37:49,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-06 03:37:49,182 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 03:37:49,183 INFO L523 BasicCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 03:37:49,397 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-05-06 03:37:49,397 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 03:37:49,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 03:37:49,398 INFO L82 PathProgramCache]: Analyzing trace with hash -132947769, now seen corresponding path program 3 times [2021-05-06 03:37:49,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 03:37:49,398 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568763290] [2021-05-06 03:37:49,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 03:37:49,406 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 03:37:49,407 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [524231543] [2021-05-06 03:37:49,407 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 03:37:49,487 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-05-06 03:37:49,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 03:37:49,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 39 conjunts are in the unsatisfiable core [2021-05-06 03:37:49,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 03:37:49,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:49,777 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 26 proven. 24 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2021-05-06 03:37:49,777 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 03:37:49,777 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568763290] [2021-05-06 03:37:49,778 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 03:37:49,778 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524231543] [2021-05-06 03:37:49,778 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524231543] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 03:37:49,778 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 03:37:49,778 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-05-06 03:37:49,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135233805] [2021-05-06 03:37:49,778 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-06 03:37:49,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 03:37:49,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-06 03:37:49,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-06 03:37:49,781 INFO L87 Difference]: Start difference. First operand 133 states and 155 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 6 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2021-05-06 03:37:50,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 03:37:50,047 INFO L93 Difference]: Finished difference Result 151 states and 174 transitions. [2021-05-06 03:37:50,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-06 03:37:50,048 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 6 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 94 [2021-05-06 03:37:50,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 03:37:50,050 INFO L225 Difference]: With dead ends: 151 [2021-05-06 03:37:50,050 INFO L226 Difference]: Without dead ends: 144 [2021-05-06 03:37:50,050 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 99.1ms TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-05-06 03:37:50,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-05-06 03:37:50,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 141. [2021-05-06 03:37:50,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 87 states have (on average 1.0919540229885059) internal successors, (95), 91 states have internal predecessors, (95), 34 states have call successors, (34), 20 states have call predecessors, (34), 19 states have return successors, (31), 29 states have call predecessors, (31), 31 states have call successors, (31) [2021-05-06 03:37:50,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 160 transitions. [2021-05-06 03:37:50,077 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 160 transitions. Word has length 94 [2021-05-06 03:37:50,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 03:37:50,077 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 160 transitions. [2021-05-06 03:37:50,077 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 6 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2021-05-06 03:37:50,078 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 160 transitions. [2021-05-06 03:37:50,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-06 03:37:50,078 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 03:37:50,079 INFO L523 BasicCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 03:37:50,301 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 03:37:50,301 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 03:37:50,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 03:37:50,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1821891511, now seen corresponding path program 1 times [2021-05-06 03:37:50,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 03:37:50,302 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615828609] [2021-05-06 03:37:50,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 03:37:50,307 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 03:37:50,308 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [696877576] [2021-05-06 03:37:50,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 03:37:50,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 03:37:50,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 8 conjunts are in the unsatisfiable core [2021-05-06 03:37:50,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 03:37:50,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:50,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:50,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:50,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:50,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:50,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:50,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:50,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:50,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:50,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:50,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:50,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:50,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:50,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:50,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:50,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:50,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:50,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:50,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:50,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:50,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:50,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:50,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:50,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:50,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:50,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:50,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:50,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:50,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:50,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:50,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:50,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:50,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:50,694 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2021-05-06 03:37:50,694 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 03:37:50,695 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615828609] [2021-05-06 03:37:50,695 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 03:37:50,695 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696877576] [2021-05-06 03:37:50,695 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696877576] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 03:37:50,695 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 03:37:50,695 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-06 03:37:50,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908810270] [2021-05-06 03:37:50,695 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-06 03:37:50,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 03:37:50,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-06 03:37:50,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-06 03:37:50,696 INFO L87 Difference]: Start difference. First operand 141 states and 160 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2021-05-06 03:37:50,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 03:37:50,792 INFO L93 Difference]: Finished difference Result 191 states and 220 transitions. [2021-05-06 03:37:50,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-06 03:37:50,793 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 94 [2021-05-06 03:37:50,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 03:37:50,794 INFO L225 Difference]: With dead ends: 191 [2021-05-06 03:37:50,794 INFO L226 Difference]: Without dead ends: 142 [2021-05-06 03:37:50,794 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 37.6ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-05-06 03:37:50,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-05-06 03:37:50,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 129. [2021-05-06 03:37:50,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 81 states have (on average 1.0617283950617284) internal successors, (86), 83 states have internal predecessors, (86), 28 states have call successors, (28), 20 states have call predecessors, (28), 19 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-05-06 03:37:50,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 139 transitions. [2021-05-06 03:37:50,806 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 139 transitions. Word has length 94 [2021-05-06 03:37:50,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 03:37:50,806 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 139 transitions. [2021-05-06 03:37:50,806 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2021-05-06 03:37:50,807 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 139 transitions. [2021-05-06 03:37:50,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-05-06 03:37:50,807 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 03:37:50,808 INFO L523 BasicCegarLoop]: trace histogram [15, 14, 14, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 03:37:51,022 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 03:37:51,023 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 03:37:51,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 03:37:51,023 INFO L82 PathProgramCache]: Analyzing trace with hash 799997287, now seen corresponding path program 4 times [2021-05-06 03:37:51,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 03:37:51,024 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991335341] [2021-05-06 03:37:51,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 03:37:51,031 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 03:37:51,031 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [119481797] [2021-05-06 03:37:51,031 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 03:37:51,091 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 03:37:51,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 03:37:51,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 33 conjunts are in the unsatisfiable core [2021-05-06 03:37:51,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 03:37:51,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:51,355 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 28 proven. 32 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2021-05-06 03:37:51,355 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 03:37:51,355 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991335341] [2021-05-06 03:37:51,355 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 03:37:51,355 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119481797] [2021-05-06 03:37:51,355 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119481797] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 03:37:51,355 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 03:37:51,355 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-05-06 03:37:51,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939965263] [2021-05-06 03:37:51,356 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-06 03:37:51,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 03:37:51,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-06 03:37:51,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-06 03:37:51,356 INFO L87 Difference]: Start difference. First operand 129 states and 139 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 6 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2021-05-06 03:37:51,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 03:37:51,590 INFO L93 Difference]: Finished difference Result 168 states and 184 transitions. [2021-05-06 03:37:51,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-06 03:37:51,590 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 6 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) Word has length 98 [2021-05-06 03:37:51,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 03:37:51,592 INFO L225 Difference]: With dead ends: 168 [2021-05-06 03:37:51,592 INFO L226 Difference]: Without dead ends: 166 [2021-05-06 03:37:51,593 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 73.8ms TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-05-06 03:37:51,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-05-06 03:37:51,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 164. [2021-05-06 03:37:51,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 104 states have (on average 1.0769230769230769) internal successors, (112), 106 states have internal predecessors, (112), 35 states have call successors, (35), 25 states have call predecessors, (35), 24 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2021-05-06 03:37:51,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 179 transitions. [2021-05-06 03:37:51,609 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 179 transitions. Word has length 98 [2021-05-06 03:37:51,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 03:37:51,609 INFO L480 AbstractCegarLoop]: Abstraction has 164 states and 179 transitions. [2021-05-06 03:37:51,609 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 6 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2021-05-06 03:37:51,609 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 179 transitions. [2021-05-06 03:37:51,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-05-06 03:37:51,610 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 03:37:51,610 INFO L523 BasicCegarLoop]: trace histogram [16, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 03:37:51,824 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-05-06 03:37:51,825 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 03:37:51,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 03:37:51,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1306280540, now seen corresponding path program 2 times [2021-05-06 03:37:51,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 03:37:51,825 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255931546] [2021-05-06 03:37:51,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 03:37:51,833 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 03:37:51,833 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1796400646] [2021-05-06 03:37:51,833 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 03:37:51,901 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 03:37:51,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 03:37:51,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 41 conjunts are in the unsatisfiable core [2021-05-06 03:37:51,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 03:37:52,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:52,197 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 30 proven. 28 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2021-05-06 03:37:52,198 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 03:37:52,198 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255931546] [2021-05-06 03:37:52,198 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 03:37:52,198 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796400646] [2021-05-06 03:37:52,198 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796400646] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 03:37:52,198 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 03:37:52,198 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-05-06 03:37:52,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276810648] [2021-05-06 03:37:52,199 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-06 03:37:52,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 03:37:52,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-06 03:37:52,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-05-06 03:37:52,199 INFO L87 Difference]: Start difference. First operand 164 states and 179 transitions. Second operand has 11 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 7 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2021-05-06 03:37:52,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 03:37:52,383 INFO L93 Difference]: Finished difference Result 170 states and 184 transitions. [2021-05-06 03:37:52,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-06 03:37:52,383 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 7 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) Word has length 105 [2021-05-06 03:37:52,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 03:37:52,384 INFO L225 Difference]: With dead ends: 170 [2021-05-06 03:37:52,384 INFO L226 Difference]: Without dead ends: 129 [2021-05-06 03:37:52,385 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 114.5ms TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-05-06 03:37:52,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-05-06 03:37:52,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2021-05-06 03:37:52,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 81 states have (on average 1.0864197530864197) internal successors, (88), 82 states have internal predecessors, (88), 28 states have call successors, (28), 20 states have call predecessors, (28), 19 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-05-06 03:37:52,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 142 transitions. [2021-05-06 03:37:52,395 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 142 transitions. Word has length 105 [2021-05-06 03:37:52,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 03:37:52,395 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 142 transitions. [2021-05-06 03:37:52,395 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 7 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2021-05-06 03:37:52,395 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 142 transitions. [2021-05-06 03:37:52,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-05-06 03:37:52,396 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 03:37:52,396 INFO L523 BasicCegarLoop]: trace histogram [17, 16, 16, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 03:37:52,606 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-05-06 03:37:52,607 INFO L428 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 03:37:52,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 03:37:52,607 INFO L82 PathProgramCache]: Analyzing trace with hash -416382532, now seen corresponding path program 3 times [2021-05-06 03:37:52,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 03:37:52,607 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523032863] [2021-05-06 03:37:52,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 03:37:52,615 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 03:37:52,615 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1847540461] [2021-05-06 03:37:52,615 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 03:37:52,688 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-05-06 03:37:52,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 03:37:52,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 8 conjunts are in the unsatisfiable core [2021-05-06 03:37:52,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 03:37:52,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:52,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:52,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:52,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:52,863 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 57 proven. 4 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2021-05-06 03:37:52,863 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 03:37:52,863 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523032863] [2021-05-06 03:37:52,863 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 03:37:52,863 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847540461] [2021-05-06 03:37:52,864 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847540461] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 03:37:52,864 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 03:37:52,864 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-05-06 03:37:52,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144020981] [2021-05-06 03:37:52,864 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-06 03:37:52,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 03:37:52,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-06 03:37:52,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-05-06 03:37:52,865 INFO L87 Difference]: Start difference. First operand 129 states and 142 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 4 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-05-06 03:37:52,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 03:37:52,898 INFO L93 Difference]: Finished difference Result 145 states and 164 transitions. [2021-05-06 03:37:52,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-06 03:37:52,899 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 4 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 109 [2021-05-06 03:37:52,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 03:37:52,900 INFO L225 Difference]: With dead ends: 145 [2021-05-06 03:37:52,900 INFO L226 Difference]: Without dead ends: 137 [2021-05-06 03:37:52,900 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 9.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-05-06 03:37:52,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-05-06 03:37:52,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2021-05-06 03:37:52,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 85 states have (on average 1.0823529411764705) internal successors, (92), 86 states have internal predecessors, (92), 32 states have call successors, (32), 20 states have call predecessors, (32), 19 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-05-06 03:37:52,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 154 transitions. [2021-05-06 03:37:52,913 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 154 transitions. Word has length 109 [2021-05-06 03:37:52,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 03:37:52,913 INFO L480 AbstractCegarLoop]: Abstraction has 137 states and 154 transitions. [2021-05-06 03:37:52,913 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 4 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-05-06 03:37:52,914 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 154 transitions. [2021-05-06 03:37:52,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-05-06 03:37:52,914 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 03:37:52,915 INFO L523 BasicCegarLoop]: trace histogram [17, 16, 16, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 03:37:53,124 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-05-06 03:37:53,125 INFO L428 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 03:37:53,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 03:37:53,125 INFO L82 PathProgramCache]: Analyzing trace with hash -76721736, now seen corresponding path program 5 times [2021-05-06 03:37:53,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 03:37:53,125 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372255477] [2021-05-06 03:37:53,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 03:37:53,132 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 03:37:53,133 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1271185440] [2021-05-06 03:37:53,133 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 03:37:53,246 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-05-06 03:37:53,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 03:37:53,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 44 conjunts are in the unsatisfiable core [2021-05-06 03:37:53,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 03:37:53,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:53,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:53,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:53,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:53,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:53,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:53,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:53,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:53,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:53,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:53,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:53,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:53,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:53,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:53,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:53,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:53,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:53,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:53,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:53,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:53,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:53,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:53,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:53,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:53,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:53,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:53,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:53,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:53,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:53,736 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 32 proven. 39 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2021-05-06 03:37:53,736 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 03:37:53,736 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372255477] [2021-05-06 03:37:53,737 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 03:37:53,737 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271185440] [2021-05-06 03:37:53,737 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271185440] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 03:37:53,737 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 03:37:53,737 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-05-06 03:37:53,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226804941] [2021-05-06 03:37:53,742 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-06 03:37:53,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 03:37:53,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-06 03:37:53,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-05-06 03:37:53,743 INFO L87 Difference]: Start difference. First operand 137 states and 154 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 8 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) [2021-05-06 03:37:54,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 03:37:54,079 INFO L93 Difference]: Finished difference Result 169 states and 193 transitions. [2021-05-06 03:37:54,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-06 03:37:54,080 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 8 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) Word has length 111 [2021-05-06 03:37:54,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 03:37:54,081 INFO L225 Difference]: With dead ends: 169 [2021-05-06 03:37:54,081 INFO L226 Difference]: Without dead ends: 161 [2021-05-06 03:37:54,083 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 196.7ms TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-05-06 03:37:54,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-05-06 03:37:54,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 150. [2021-05-06 03:37:54,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 94 states have (on average 1.0851063829787233) internal successors, (102), 95 states have internal predecessors, (102), 34 states have call successors, (34), 22 states have call predecessors, (34), 21 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2021-05-06 03:37:54,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 168 transitions. [2021-05-06 03:37:54,096 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 168 transitions. Word has length 111 [2021-05-06 03:37:54,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 03:37:54,097 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 168 transitions. [2021-05-06 03:37:54,097 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 8 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) [2021-05-06 03:37:54,097 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 168 transitions. [2021-05-06 03:37:54,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-05-06 03:37:54,098 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 03:37:54,098 INFO L523 BasicCegarLoop]: trace histogram [18, 17, 17, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 03:37:54,312 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 03:37:54,313 INFO L428 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 03:37:54,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 03:37:54,313 INFO L82 PathProgramCache]: Analyzing trace with hash 567610840, now seen corresponding path program 6 times [2021-05-06 03:37:54,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 03:37:54,313 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116532767] [2021-05-06 03:37:54,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 03:37:54,320 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 03:37:54,320 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1822631656] [2021-05-06 03:37:54,320 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 03:37:54,411 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-05-06 03:37:54,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 03:37:54,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 33 conjunts are in the unsatisfiable core [2021-05-06 03:37:54,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 03:37:54,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:54,716 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 133 proven. 16 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2021-05-06 03:37:54,716 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 03:37:54,716 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116532767] [2021-05-06 03:37:54,716 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 03:37:54,717 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822631656] [2021-05-06 03:37:54,717 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822631656] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 03:37:54,717 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 03:37:54,717 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-05-06 03:37:54,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059220177] [2021-05-06 03:37:54,719 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-06 03:37:54,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 03:37:54,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-06 03:37:54,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-05-06 03:37:54,720 INFO L87 Difference]: Start difference. First operand 150 states and 168 transitions. Second operand has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2021-05-06 03:37:54,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 03:37:54,876 INFO L93 Difference]: Finished difference Result 176 states and 200 transitions. [2021-05-06 03:37:54,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-06 03:37:54,876 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 115 [2021-05-06 03:37:54,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 03:37:54,877 INFO L225 Difference]: With dead ends: 176 [2021-05-06 03:37:54,877 INFO L226 Difference]: Without dead ends: 174 [2021-05-06 03:37:54,879 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 78.9ms TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-05-06 03:37:54,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-05-06 03:37:54,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 163. [2021-05-06 03:37:54,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 103 states have (on average 1.0970873786407767) internal successors, (113), 104 states have internal predecessors, (113), 36 states have call successors, (36), 24 states have call predecessors, (36), 23 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2021-05-06 03:37:54,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 183 transitions. [2021-05-06 03:37:54,894 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 183 transitions. Word has length 115 [2021-05-06 03:37:54,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 03:37:54,895 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 183 transitions. [2021-05-06 03:37:54,895 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2021-05-06 03:37:54,895 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 183 transitions. [2021-05-06 03:37:54,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-05-06 03:37:54,897 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 03:37:54,897 INFO L523 BasicCegarLoop]: trace histogram [19, 18, 18, 4, 4, 4, 4, 4, 4, 4, 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] [2021-05-06 03:37:55,124 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-05-06 03:37:55,124 INFO L428 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 03:37:55,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 03:37:55,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1305935669, now seen corresponding path program 4 times [2021-05-06 03:37:55,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 03:37:55,125 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427745094] [2021-05-06 03:37:55,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 03:37:55,132 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 03:37:55,132 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [51808396] [2021-05-06 03:37:55,132 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 03:37:55,192 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 03:37:55,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 03:37:55,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-06 03:37:55,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 03:37:55,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:55,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:56,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:56,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:56,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:56,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:56,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:56,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:56,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:56,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:56,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:56,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:56,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:56,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:56,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:56,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:56,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:57,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:57,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:57,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:57,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:57,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:57,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:57,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:57,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:57,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:57,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:57,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:57,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:57,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:57,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:57,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:58,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:58,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:58,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:58,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:58,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:58,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:58,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:58,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:58,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:58,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:58,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:58,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:58,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:58,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:58,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:58,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:58,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:58,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:58,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:58,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:37:58,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:40:00,018 WARN L205 SmtUtils]: Spent 2.01 m on a formula simplification. DAG size of input: 25308 DAG size of output: 24817 [2021-05-06 03:40:03,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:40:06,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:40:08,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 03:42:08,805 WARN L205 SmtUtils]: Spent 2.00 m on a formula simplification. DAG size of input: 25362 DAG size of output: 24864