/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/mannadiv_unwindbound50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 04:12:43,159 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 04:12:43,161 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 04:12:43,202 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-06 04:12:43,223 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 04:12:43,225 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 04:12:43,226 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 04:12:43,228 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 04:12:43,231 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 04:12:43,231 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 04:12:43,234 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 04:12:43,240 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 04:12:43,241 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 04:12:43,243 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 04:12:43,244 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 04:12:43,248 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 04:12:43,252 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-06 04:12:43,281 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 04:12:43,281 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 04:12:43,282 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 04:12:43,284 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 04:12:43,316 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 04:12:43,317 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 04:12:43,319 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-06 04:12:43,319 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-06 04:12:43,319 INFO L138 SettingsManager]: * Use SBE=true [2021-05-06 04:12:43,320 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 04:12:43,320 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 04:12:43,320 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 04:12:43,320 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 04:12:43,320 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 04:12:43,321 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 04:12:43,321 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 04:12:43,321 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 04:12:43,322 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 04:12:43,322 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 04:12:43,322 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 04:12:43,322 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 04:12:43,322 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 04:12:43,322 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 04:12:43,322 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 04:12:43,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 04:12:43,323 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 04:12:43,323 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-06 04:12:43,323 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-06 04:12:43,323 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-06 04:12:43,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-06 04:12:43,323 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-06 04:12:43,324 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-06 04:12:43,324 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 04:12:43,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 04:12:43,616 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 04:12:43,618 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 04:12:43,619 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 04:12:43,620 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 04:12:43,620 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/mannadiv_unwindbound50.c [2021-05-06 04:12:43,682 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aaae846c7/64b5a3c009344d6a8455ac73ce774c7f/FLAGedbc20033 [2021-05-06 04:12:44,153 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 04:12:44,154 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/mannadiv_unwindbound50.c [2021-05-06 04:12:44,160 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aaae846c7/64b5a3c009344d6a8455ac73ce774c7f/FLAGedbc20033 [2021-05-06 04:12:44,180 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aaae846c7/64b5a3c009344d6a8455ac73ce774c7f [2021-05-06 04:12:44,186 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 04:12:44,188 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-06 04:12:44,191 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 04:12:44,191 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 04:12:44,194 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 04:12:44,195 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 04:12:44" (1/1) ... [2021-05-06 04:12:44,197 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24899976 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 04:12:44, skipping insertion in model container [2021-05-06 04:12:44,197 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 04:12:44" (1/1) ... [2021-05-06 04:12:44,203 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 04:12:44,215 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 04:12:44,364 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/mannadiv_unwindbound50.c[573,586] [2021-05-06 04:12:44,381 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 04:12:44,387 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 04:12:44,415 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/mannadiv_unwindbound50.c[573,586] [2021-05-06 04:12:44,428 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 04:12:44,450 INFO L208 MainTranslator]: Completed translation [2021-05-06 04:12:44,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 04:12:44 WrapperNode [2021-05-06 04:12:44,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 04:12:44,453 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 04:12:44,453 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 04:12:44,454 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 04:12:44,462 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 04:12:44" (1/1) ... [2021-05-06 04:12:44,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 04:12:44" (1/1) ... [2021-05-06 04:12:44,469 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 04:12:44" (1/1) ... [2021-05-06 04:12:44,469 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 04:12:44" (1/1) ... [2021-05-06 04:12:44,477 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 04:12:44" (1/1) ... [2021-05-06 04:12:44,481 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 04:12:44" (1/1) ... [2021-05-06 04:12:44,488 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 04:12:44" (1/1) ... [2021-05-06 04:12:44,492 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 04:12:44,494 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 04:12:44,494 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 04:12:44,494 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 04:12:44,494 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 04:12:44" (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 04:12:44,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 04:12:44,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 04:12:44,568 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 04:12:44,568 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-06 04:12:44,569 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 04:12:44,569 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 04:12:44,569 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 04:12:44,569 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 04:12:44,569 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 04:12:44,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 04:12:44,570 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-06 04:12:44,570 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-06 04:12:44,571 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 04:12:44,571 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 04:12:44,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 04:12:44,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 04:12:44,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 04:12:44,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 04:12:44,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 04:12:44,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 04:12:44,841 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 04:12:44,841 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-06 04:12:44,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 04:12:44 BoogieIcfgContainer [2021-05-06 04:12:44,842 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 04:12:44,843 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 04:12:44,843 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 04:12:44,845 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 04:12:44,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 04:12:44" (1/3) ... [2021-05-06 04:12:44,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ca13a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 04:12:44, skipping insertion in model container [2021-05-06 04:12:44,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 04:12:44" (2/3) ... [2021-05-06 04:12:44,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ca13a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 04:12:44, skipping insertion in model container [2021-05-06 04:12:44,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 04:12:44" (3/3) ... [2021-05-06 04:12:44,848 INFO L111 eAbstractionObserver]: Analyzing ICFG mannadiv_unwindbound50.c [2021-05-06 04:12:44,852 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-06 04:12:44,872 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 04:12:44,903 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 04:12:44,937 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 04:12:44,937 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-06 04:12:44,938 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-06 04:12:44,938 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 04:12:44,938 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 04:12:44,938 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 04:12:44,938 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 04:12:44,938 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 04:12:44,967 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-06 04:12:44,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-05-06 04:12:44,971 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:12:44,971 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 04:12:44,972 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:12:44,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:12:44,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1859024204, now seen corresponding path program 1 times [2021-05-06 04:12:44,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:12:44,996 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398950578] [2021-05-06 04:12:44,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:12:45,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 04:12:45,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 04:12:45,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 04:12:45,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-06 04:12:45,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 04:12:45,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-06 04:12:45,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 04:12:45,291 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 04:12:45,291 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:12:45,292 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398950578] [2021-05-06 04:12:45,292 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398950578] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 04:12:45,292 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 04:12:45,293 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-06 04:12:45,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375111681] [2021-05-06 04:12:45,296 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-06 04:12:45,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:12:45,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-06 04:12:45,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 04:12:45,306 INFO L87 Difference]: Start difference. First operand has 30 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-06 04:12:45,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:12:45,393 INFO L93 Difference]: Finished difference Result 54 states and 72 transitions. [2021-05-06 04:12:45,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-06 04:12:45,395 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2021-05-06 04:12:45,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:12:45,401 INFO L225 Difference]: With dead ends: 54 [2021-05-06 04:12:45,401 INFO L226 Difference]: Without dead ends: 26 [2021-05-06 04:12:45,403 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 04:12:45,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-05-06 04:12:45,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2021-05-06 04:12:45,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-06 04:12:45,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2021-05-06 04:12:45,434 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 22 [2021-05-06 04:12:45,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:12:45,434 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2021-05-06 04:12:45,435 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-06 04:12:45,435 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2021-05-06 04:12:45,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-06 04:12:45,436 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:12:45,436 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 04:12:45,437 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 04:12:45,437 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:12:45,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:12:45,437 INFO L82 PathProgramCache]: Analyzing trace with hash 243739414, now seen corresponding path program 1 times [2021-05-06 04:12:45,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:12:45,438 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753460614] [2021-05-06 04:12:45,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:12:45,453 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 04:12:45,453 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2139058974] [2021-05-06 04:12:45,453 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 04:12:45,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 04:12:45,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-06 04:12:45,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 04:12:45,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:45,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:45,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:45,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:45,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:45,678 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 04:12:45,679 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:12:45,679 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753460614] [2021-05-06 04:12:45,679 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 04:12:45,679 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139058974] [2021-05-06 04:12:45,679 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139058974] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 04:12:45,680 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 04:12:45,680 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-06 04:12:45,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724980682] [2021-05-06 04:12:45,681 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-06 04:12:45,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:12:45,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-06 04:12:45,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-06 04:12:45,682 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-06 04:12:45,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:12:45,694 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2021-05-06 04:12:45,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-06 04:12:45,695 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2021-05-06 04:12:45,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:12:45,696 INFO L225 Difference]: With dead ends: 34 [2021-05-06 04:12:45,696 INFO L226 Difference]: Without dead ends: 27 [2021-05-06 04:12:45,697 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.6ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-06 04:12:45,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-05-06 04:12:45,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-05-06 04:12:45,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-06 04:12:45,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2021-05-06 04:12:45,703 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 23 [2021-05-06 04:12:45,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:12:45,704 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-05-06 04:12:45,704 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-06 04:12:45,705 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2021-05-06 04:12:45,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-06 04:12:45,705 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:12:45,705 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 04:12:45,929 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-06 04:12:45,930 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:12:45,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:12:45,930 INFO L82 PathProgramCache]: Analyzing trace with hash 245526874, now seen corresponding path program 1 times [2021-05-06 04:12:45,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:12:45,930 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280000203] [2021-05-06 04:12:45,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:12:45,949 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 04:12:45,949 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1356139496] [2021-05-06 04:12:45,949 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 04:12:46,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 04:12:46,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 14 conjunts are in the unsatisfiable core [2021-05-06 04:12:46,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 04:12:46,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:46,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:46,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:46,119 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-06 04:12:46,119 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:12:46,119 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280000203] [2021-05-06 04:12:46,120 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 04:12:46,120 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356139496] [2021-05-06 04:12:46,120 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356139496] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 04:12:46,120 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 04:12:46,120 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-06 04:12:46,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798370044] [2021-05-06 04:12:46,121 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-06 04:12:46,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:12:46,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-06 04:12:46,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-06 04:12:46,122 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-05-06 04:12:46,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:12:46,247 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2021-05-06 04:12:46,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-06 04:12:46,247 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2021-05-06 04:12:46,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:12:46,249 INFO L225 Difference]: With dead ends: 37 [2021-05-06 04:12:46,249 INFO L226 Difference]: Without dead ends: 35 [2021-05-06 04:12:46,251 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 55.8ms TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-05-06 04:12:46,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-05-06 04:12:46,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2021-05-06 04:12:46,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 20 states have (on average 1.2) internal successors, (24), 22 states have internal predecessors, (24), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-06 04:12:46,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2021-05-06 04:12:46,266 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 23 [2021-05-06 04:12:46,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:12:46,267 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2021-05-06 04:12:46,267 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-05-06 04:12:46,267 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2021-05-06 04:12:46,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-06 04:12:46,268 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:12:46,268 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 04:12:46,492 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:12:46,492 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:12:46,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:12:46,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1019533657, now seen corresponding path program 1 times [2021-05-06 04:12:46,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:12:46,493 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155292693] [2021-05-06 04:12:46,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:12:46,503 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 04:12:46,503 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [288322916] [2021-05-06 04:12:46,503 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 04:12:46,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 04:12:46,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-06 04:12:46,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 04:12:46,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:46,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:46,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:46,731 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 04:12:46,731 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:12:46,731 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155292693] [2021-05-06 04:12:46,731 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 04:12:46,731 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288322916] [2021-05-06 04:12:46,732 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288322916] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 04:12:46,732 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 04:12:46,732 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-05-06 04:12:46,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965555304] [2021-05-06 04:12:46,732 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-06 04:12:46,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:12:46,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-06 04:12:46,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-06 04:12:46,733 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-05-06 04:12:46,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:12:46,815 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2021-05-06 04:12:46,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-06 04:12:46,815 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2021-05-06 04:12:46,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:12:46,817 INFO L225 Difference]: With dead ends: 39 [2021-05-06 04:12:46,817 INFO L226 Difference]: Without dead ends: 34 [2021-05-06 04:12:46,818 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 69.0ms TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-05-06 04:12:46,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-05-06 04:12:46,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2021-05-06 04:12:46,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-06 04:12:46,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2021-05-06 04:12:46,823 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 29 [2021-05-06 04:12:46,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:12:46,823 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2021-05-06 04:12:46,824 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-05-06 04:12:46,824 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2021-05-06 04:12:46,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-05-06 04:12:46,824 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:12:46,825 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 04:12:47,045 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:12:47,045 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:12:47,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:12:47,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1080225052, now seen corresponding path program 1 times [2021-05-06 04:12:47,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:12:47,046 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347283863] [2021-05-06 04:12:47,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:12:47,062 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 04:12:47,062 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2062241809] [2021-05-06 04:12:47,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 04:12:47,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 04:12:47,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-06 04:12:47,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 04:12:47,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:47,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:47,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:47,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:47,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:47,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:47,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:47,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:47,213 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 04:12:47,213 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:12:47,213 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347283863] [2021-05-06 04:12:47,213 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 04:12:47,213 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062241809] [2021-05-06 04:12:47,213 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062241809] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 04:12:47,213 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 04:12:47,213 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-05-06 04:12:47,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511930935] [2021-05-06 04:12:47,214 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-06 04:12:47,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:12:47,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-06 04:12:47,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-06 04:12:47,215 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-06 04:12:47,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:12:47,250 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2021-05-06 04:12:47,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-06 04:12:47,251 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 32 [2021-05-06 04:12:47,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:12:47,252 INFO L225 Difference]: With dead ends: 43 [2021-05-06 04:12:47,252 INFO L226 Difference]: Without dead ends: 38 [2021-05-06 04:12:47,252 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 14.5ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-06 04:12:47,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-05-06 04:12:47,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-05-06 04:12:47,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-06 04:12:47,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2021-05-06 04:12:47,258 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 32 [2021-05-06 04:12:47,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:12:47,259 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2021-05-06 04:12:47,259 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-06 04:12:47,259 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2021-05-06 04:12:47,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-05-06 04:12:47,260 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:12:47,260 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-05-06 04:12:47,480 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:12:47,481 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:12:47,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:12:47,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1448743382, now seen corresponding path program 2 times [2021-05-06 04:12:47,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:12:47,482 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647450271] [2021-05-06 04:12:47,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:12:47,491 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 04:12:47,491 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2080922390] [2021-05-06 04:12:47,492 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 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 04:12:47,555 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 04:12:47,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 04:12:47,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-06 04:12:47,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 04:12:47,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:47,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:47,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:47,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:47,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:47,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:47,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:47,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:47,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:47,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:47,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:47,673 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 04:12:47,673 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:12:47,673 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647450271] [2021-05-06 04:12:47,674 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 04:12:47,674 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080922390] [2021-05-06 04:12:47,674 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080922390] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 04:12:47,674 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 04:12:47,674 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-05-06 04:12:47,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470670783] [2021-05-06 04:12:47,675 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-06 04:12:47,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:12:47,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-06 04:12:47,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-06 04:12:47,675 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-06 04:12:47,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:12:47,747 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2021-05-06 04:12:47,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-06 04:12:47,747 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 41 [2021-05-06 04:12:47,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:12:47,748 INFO L225 Difference]: With dead ends: 52 [2021-05-06 04:12:47,749 INFO L226 Difference]: Without dead ends: 47 [2021-05-06 04:12:47,749 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 27.9ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-05-06 04:12:47,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-05-06 04:12:47,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-05-06 04:12:47,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 33 states have (on average 1.121212121212121) internal successors, (37), 33 states have internal predecessors, (37), 8 states have call successors, (8), 7 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-06 04:12:47,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2021-05-06 04:12:47,756 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 41 [2021-05-06 04:12:47,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:12:47,756 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2021-05-06 04:12:47,757 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-06 04:12:47,757 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2021-05-06 04:12:47,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-05-06 04:12:47,757 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:12:47,758 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-05-06 04:12:47,979 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-05-06 04:12:47,979 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:12:47,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:12:47,980 INFO L82 PathProgramCache]: Analyzing trace with hash -678977956, now seen corresponding path program 3 times [2021-05-06 04:12:47,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:12:47,980 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908010149] [2021-05-06 04:12:47,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:12:47,995 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 04:12:47,996 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [884750134] [2021-05-06 04:12:47,996 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 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 04:12:48,071 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-05-06 04:12:48,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 04:12:48,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-06 04:12:48,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 04:12:48,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:48,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:48,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:48,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:48,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:48,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:48,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:48,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:48,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:48,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:48,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:48,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:48,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:48,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:48,232 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 04:12:48,233 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:12:48,233 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908010149] [2021-05-06 04:12:48,233 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 04:12:48,233 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884750134] [2021-05-06 04:12:48,233 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884750134] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 04:12:48,233 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 04:12:48,233 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-05-06 04:12:48,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344957207] [2021-05-06 04:12:48,234 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-06 04:12:48,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:12:48,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-06 04:12:48,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-05-06 04:12:48,235 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 6 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2021-05-06 04:12:48,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:12:48,314 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2021-05-06 04:12:48,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-06 04:12:48,314 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 6 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 50 [2021-05-06 04:12:48,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:12:48,315 INFO L225 Difference]: With dead ends: 61 [2021-05-06 04:12:48,315 INFO L226 Difference]: Without dead ends: 56 [2021-05-06 04:12:48,316 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 39.5ms TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-05-06 04:12:48,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-05-06 04:12:48,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-05-06 04:12:48,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 40 states have (on average 1.125) internal successors, (45), 40 states have internal predecessors, (45), 9 states have call successors, (9), 8 states have call predecessors, (9), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-06 04:12:48,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2021-05-06 04:12:48,324 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 50 [2021-05-06 04:12:48,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:12:48,325 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2021-05-06 04:12:48,325 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 6 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2021-05-06 04:12:48,325 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2021-05-06 04:12:48,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-05-06 04:12:48,326 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:12:48,326 INFO L523 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 04:12:48,538 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:12:48,539 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:12:48,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:12:48,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1632159894, now seen corresponding path program 4 times [2021-05-06 04:12:48,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:12:48,540 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34533603] [2021-05-06 04:12:48,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:12:48,547 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 04:12:48,547 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1097970327] [2021-05-06 04:12:48,548 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 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 04:12:48,693 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 04:12:48,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 04:12:48,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-06 04:12:48,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 04:12:48,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:48,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:48,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:48,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:48,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:48,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:48,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:48,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:48,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:48,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:48,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:48,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:48,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:48,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:48,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:48,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:48,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:48,977 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 62 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 04:12:48,977 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:12:48,978 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34533603] [2021-05-06 04:12:48,978 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 04:12:48,978 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097970327] [2021-05-06 04:12:48,978 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097970327] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 04:12:48,978 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 04:12:48,978 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-05-06 04:12:48,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888468660] [2021-05-06 04:12:48,979 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-06 04:12:48,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:12:48,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-06 04:12:48,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-06 04:12:48,980 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 7 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) [2021-05-06 04:12:49,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:12:49,090 INFO L93 Difference]: Finished difference Result 70 states and 76 transitions. [2021-05-06 04:12:49,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-06 04:12:49,091 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 7 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) Word has length 59 [2021-05-06 04:12:49,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:12:49,092 INFO L225 Difference]: With dead ends: 70 [2021-05-06 04:12:49,092 INFO L226 Difference]: Without dead ends: 65 [2021-05-06 04:12:49,093 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 52.2ms TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2021-05-06 04:12:49,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-05-06 04:12:49,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2021-05-06 04:12:49,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 47 states have (on average 1.127659574468085) internal successors, (53), 47 states have internal predecessors, (53), 10 states have call successors, (10), 9 states have call predecessors, (10), 7 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-06 04:12:49,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 71 transitions. [2021-05-06 04:12:49,101 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 71 transitions. Word has length 59 [2021-05-06 04:12:49,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:12:49,101 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 71 transitions. [2021-05-06 04:12:49,101 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 7 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) [2021-05-06 04:12:49,102 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 71 transitions. [2021-05-06 04:12:49,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-05-06 04:12:49,102 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:12:49,102 INFO L523 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 04:12:49,320 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:12:49,321 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:12:49,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:12:49,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1512407140, now seen corresponding path program 5 times [2021-05-06 04:12:49,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:12:49,321 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651523298] [2021-05-06 04:12:49,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:12:49,330 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 04:12:49,330 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2122580597] [2021-05-06 04:12:49,330 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 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 04:12:49,426 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-05-06 04:12:49,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 04:12:49,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-06 04:12:49,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 04:12:49,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:49,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:49,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:49,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:49,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:49,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:49,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:49,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:49,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:49,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:49,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:49,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:49,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:49,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:49,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:49,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:49,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:49,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:49,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:49,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:49,614 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 10 proven. 100 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 04:12:49,615 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:12:49,615 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651523298] [2021-05-06 04:12:49,615 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 04:12:49,615 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122580597] [2021-05-06 04:12:49,615 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122580597] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 04:12:49,615 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 04:12:49,615 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-05-06 04:12:49,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96791416] [2021-05-06 04:12:49,616 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-06 04:12:49,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:12:49,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-06 04:12:49,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-06 04:12:49,616 INFO L87 Difference]: Start difference. First operand 65 states and 71 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 8 states have internal predecessors, (47), 8 states have call successors, (10), 8 states have call predecessors, (10), 6 states have return successors, (8), 6 states have call predecessors, (8), 7 states have call successors, (8) [2021-05-06 04:12:49,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:12:49,709 INFO L93 Difference]: Finished difference Result 79 states and 86 transitions. [2021-05-06 04:12:49,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-06 04:12:49,710 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 8 states have internal predecessors, (47), 8 states have call successors, (10), 8 states have call predecessors, (10), 6 states have return successors, (8), 6 states have call predecessors, (8), 7 states have call successors, (8) Word has length 68 [2021-05-06 04:12:49,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:12:49,711 INFO L225 Difference]: With dead ends: 79 [2021-05-06 04:12:49,711 INFO L226 Difference]: Without dead ends: 74 [2021-05-06 04:12:49,711 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 64.3ms TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2021-05-06 04:12:49,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-05-06 04:12:49,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-05-06 04:12:49,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 54 states have (on average 1.1296296296296295) internal successors, (61), 54 states have internal predecessors, (61), 11 states have call successors, (11), 10 states have call predecessors, (11), 8 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-05-06 04:12:49,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 81 transitions. [2021-05-06 04:12:49,724 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 81 transitions. Word has length 68 [2021-05-06 04:12:49,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:12:49,724 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 81 transitions. [2021-05-06 04:12:49,724 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 8 states have internal predecessors, (47), 8 states have call successors, (10), 8 states have call predecessors, (10), 6 states have return successors, (8), 6 states have call predecessors, (8), 7 states have call successors, (8) [2021-05-06 04:12:49,724 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 81 transitions. [2021-05-06 04:12:49,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-05-06 04:12:49,725 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:12:49,725 INFO L523 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 04:12:49,949 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-05-06 04:12:49,949 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:12:49,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:12:49,949 INFO L82 PathProgramCache]: Analyzing trace with hash 771706710, now seen corresponding path program 6 times [2021-05-06 04:12:49,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:12:49,950 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781878262] [2021-05-06 04:12:49,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:12:49,959 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 04:12:49,959 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [649944205] [2021-05-06 04:12:49,959 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 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 04:12:50,043 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-05-06 04:12:50,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 04:12:50,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 17 conjunts are in the unsatisfiable core [2021-05-06 04:12:50,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 04:12:50,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:50,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:50,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:50,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:50,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:50,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:50,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:50,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:50,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:50,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:50,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:50,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:50,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:50,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:50,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:50,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:50,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:50,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:50,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:50,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:50,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:50,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:50,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:50,244 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 12 proven. 147 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 04:12:50,244 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:12:50,244 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781878262] [2021-05-06 04:12:50,244 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 04:12:50,244 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649944205] [2021-05-06 04:12:50,244 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649944205] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 04:12:50,244 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 04:12:50,245 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-05-06 04:12:50,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211936054] [2021-05-06 04:12:50,245 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-06 04:12:50,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:12:50,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-06 04:12:50,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-06 04:12:50,246 INFO L87 Difference]: Start difference. First operand 74 states and 81 transitions. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 9 states have internal predecessors, (54), 9 states have call successors, (11), 9 states have call predecessors, (11), 7 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9) [2021-05-06 04:12:50,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:12:50,352 INFO L93 Difference]: Finished difference Result 88 states and 96 transitions. [2021-05-06 04:12:50,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-06 04:12:50,353 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 9 states have internal predecessors, (54), 9 states have call successors, (11), 9 states have call predecessors, (11), 7 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9) Word has length 77 [2021-05-06 04:12:50,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:12:50,354 INFO L225 Difference]: With dead ends: 88 [2021-05-06 04:12:50,354 INFO L226 Difference]: Without dead ends: 83 [2021-05-06 04:12:50,354 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 87.3ms TimeCoverageRelationStatistics Valid=92, Invalid=148, Unknown=0, NotChecked=0, Total=240 [2021-05-06 04:12:50,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-05-06 04:12:50,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2021-05-06 04:12:50,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 61 states have (on average 1.1311475409836065) internal successors, (69), 61 states have internal predecessors, (69), 12 states have call successors, (12), 11 states have call predecessors, (12), 9 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-06 04:12:50,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2021-05-06 04:12:50,362 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 91 transitions. Word has length 77 [2021-05-06 04:12:50,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:12:50,363 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 91 transitions. [2021-05-06 04:12:50,363 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 9 states have internal predecessors, (54), 9 states have call successors, (11), 9 states have call predecessors, (11), 7 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9) [2021-05-06 04:12:50,363 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2021-05-06 04:12:50,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-05-06 04:12:50,364 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:12:50,364 INFO L523 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 04:12:50,576 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:12:50,577 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:12:50,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:12:50,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1848611036, now seen corresponding path program 7 times [2021-05-06 04:12:50,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:12:50,578 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762932823] [2021-05-06 04:12:50,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:12:50,585 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 04:12:50,585 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1910882583] [2021-05-06 04:12:50,585 INFO L93 rtionOrderModulation]: Changing assertion order to 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 04:12:50,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 04:12:50,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-06 04:12:50,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 04:12:50,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:50,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:50,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:50,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:50,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:50,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:50,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:50,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:50,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:50,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:50,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:50,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:50,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:50,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:50,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:50,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:50,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:50,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:50,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:50,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:50,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:50,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:50,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:50,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:50,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:50,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:50,892 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 14 proven. 203 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 04:12:50,892 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:12:50,892 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762932823] [2021-05-06 04:12:50,892 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 04:12:50,892 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910882583] [2021-05-06 04:12:50,893 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910882583] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 04:12:50,893 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 04:12:50,893 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-05-06 04:12:50,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840100738] [2021-05-06 04:12:50,893 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-06 04:12:50,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:12:50,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-06 04:12:50,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-05-06 04:12:50,894 INFO L87 Difference]: Start difference. First operand 83 states and 91 transitions. Second operand has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 10 states have internal predecessors, (61), 10 states have call successors, (12), 10 states have call predecessors, (12), 8 states have return successors, (10), 8 states have call predecessors, (10), 9 states have call successors, (10) [2021-05-06 04:12:51,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:12:51,033 INFO L93 Difference]: Finished difference Result 97 states and 106 transitions. [2021-05-06 04:12:51,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-06 04:12:51,034 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 10 states have internal predecessors, (61), 10 states have call successors, (12), 10 states have call predecessors, (12), 8 states have return successors, (10), 8 states have call predecessors, (10), 9 states have call successors, (10) Word has length 86 [2021-05-06 04:12:51,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:12:51,035 INFO L225 Difference]: With dead ends: 97 [2021-05-06 04:12:51,035 INFO L226 Difference]: Without dead ends: 92 [2021-05-06 04:12:51,035 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 100.6ms TimeCoverageRelationStatistics Valid=117, Invalid=189, Unknown=0, NotChecked=0, Total=306 [2021-05-06 04:12:51,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-05-06 04:12:51,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-05-06 04:12:51,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 68 states have (on average 1.1323529411764706) internal successors, (77), 68 states have internal predecessors, (77), 13 states have call successors, (13), 12 states have call predecessors, (13), 10 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-05-06 04:12:51,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 101 transitions. [2021-05-06 04:12:51,043 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 101 transitions. Word has length 86 [2021-05-06 04:12:51,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:12:51,044 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 101 transitions. [2021-05-06 04:12:51,044 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 10 states have internal predecessors, (61), 10 states have call successors, (12), 10 states have call predecessors, (12), 8 states have return successors, (10), 8 states have call predecessors, (10), 9 states have call successors, (10) [2021-05-06 04:12:51,044 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 101 transitions. [2021-05-06 04:12:51,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-05-06 04:12:51,045 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:12:51,045 INFO L523 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 04:12:51,268 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:12:51,268 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:12:51,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:12:51,269 INFO L82 PathProgramCache]: Analyzing trace with hash -399923690, now seen corresponding path program 8 times [2021-05-06 04:12:51,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:12:51,269 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228496027] [2021-05-06 04:12:51,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:12:51,278 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 04:12:51,278 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [193216990] [2021-05-06 04:12:51,278 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 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 04:12:51,372 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 04:12:51,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 04:12:51,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 21 conjunts are in the unsatisfiable core [2021-05-06 04:12:51,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 04:12:51,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:51,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:51,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:51,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:51,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:51,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:51,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:51,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:51,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:51,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:51,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:51,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:51,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:51,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:51,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:51,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:51,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:51,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:51,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:51,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:51,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:51,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:51,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:51,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:51,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:51,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:51,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:51,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:51,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:51,612 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 16 proven. 268 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 04:12:51,612 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:12:51,613 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228496027] [2021-05-06 04:12:51,613 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 04:12:51,613 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193216990] [2021-05-06 04:12:51,613 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193216990] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 04:12:51,613 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 04:12:51,613 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-05-06 04:12:51,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560349395] [2021-05-06 04:12:51,613 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-06 04:12:51,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:12:51,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-06 04:12:51,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2021-05-06 04:12:51,614 INFO L87 Difference]: Start difference. First operand 92 states and 101 transitions. Second operand has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 11 states have call successors, (13), 11 states have call predecessors, (13), 9 states have return successors, (11), 9 states have call predecessors, (11), 10 states have call successors, (11) [2021-05-06 04:12:51,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:12:51,765 INFO L93 Difference]: Finished difference Result 106 states and 116 transitions. [2021-05-06 04:12:51,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-06 04:12:51,765 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 11 states have call successors, (13), 11 states have call predecessors, (13), 9 states have return successors, (11), 9 states have call predecessors, (11), 10 states have call successors, (11) Word has length 95 [2021-05-06 04:12:51,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:12:51,770 INFO L225 Difference]: With dead ends: 106 [2021-05-06 04:12:51,770 INFO L226 Difference]: Without dead ends: 101 [2021-05-06 04:12:51,771 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 123.1ms TimeCoverageRelationStatistics Valid=145, Invalid=235, Unknown=0, NotChecked=0, Total=380 [2021-05-06 04:12:51,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-05-06 04:12:51,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2021-05-06 04:12:51,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 75 states have (on average 1.1333333333333333) internal successors, (85), 75 states have internal predecessors, (85), 14 states have call successors, (14), 13 states have call predecessors, (14), 11 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-05-06 04:12:51,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 111 transitions. [2021-05-06 04:12:51,786 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 111 transitions. Word has length 95 [2021-05-06 04:12:51,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:12:51,786 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 111 transitions. [2021-05-06 04:12:51,787 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 11 states have call successors, (13), 11 states have call predecessors, (13), 9 states have return successors, (11), 9 states have call predecessors, (11), 10 states have call successors, (11) [2021-05-06 04:12:51,787 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 111 transitions. [2021-05-06 04:12:51,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-05-06 04:12:51,788 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:12:51,788 INFO L523 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 04:12:52,000 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-05-06 04:12:52,001 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:12:52,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:12:52,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1717228060, now seen corresponding path program 9 times [2021-05-06 04:12:52,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:12:52,002 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699403014] [2021-05-06 04:12:52,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:12:52,009 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 04:12:52,009 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [661741938] [2021-05-06 04:12:52,009 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 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 04:12:52,177 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-05-06 04:12:52,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 04:12:52,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 23 conjunts are in the unsatisfiable core [2021-05-06 04:12:52,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 04:12:52,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:52,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:52,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:52,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:52,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:52,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:52,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:52,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:52,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:52,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:52,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:52,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:52,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:52,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:52,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:52,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:52,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:52,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:52,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:52,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:52,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:52,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:52,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:52,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:52,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:52,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:52,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:52,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:52,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:52,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:52,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:52,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:52,442 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 18 proven. 342 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 04:12:52,442 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:12:52,442 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699403014] [2021-05-06 04:12:52,442 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 04:12:52,442 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661741938] [2021-05-06 04:12:52,442 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661741938] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 04:12:52,442 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 04:12:52,442 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-05-06 04:12:52,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17148881] [2021-05-06 04:12:52,443 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-06 04:12:52,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:12:52,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-06 04:12:52,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-05-06 04:12:52,444 INFO L87 Difference]: Start difference. First operand 101 states and 111 transitions. Second operand has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 12 states have internal predecessors, (75), 12 states have call successors, (14), 12 states have call predecessors, (14), 10 states have return successors, (12), 10 states have call predecessors, (12), 11 states have call successors, (12) [2021-05-06 04:12:52,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:12:52,598 INFO L93 Difference]: Finished difference Result 115 states and 126 transitions. [2021-05-06 04:12:52,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-05-06 04:12:52,598 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 12 states have internal predecessors, (75), 12 states have call successors, (14), 12 states have call predecessors, (14), 10 states have return successors, (12), 10 states have call predecessors, (12), 11 states have call successors, (12) Word has length 104 [2021-05-06 04:12:52,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:12:52,600 INFO L225 Difference]: With dead ends: 115 [2021-05-06 04:12:52,600 INFO L226 Difference]: Without dead ends: 110 [2021-05-06 04:12:52,600 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 141.1ms TimeCoverageRelationStatistics Valid=176, Invalid=286, Unknown=0, NotChecked=0, Total=462 [2021-05-06 04:12:52,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-05-06 04:12:52,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2021-05-06 04:12:52,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 82 states have (on average 1.1341463414634145) internal successors, (93), 82 states have internal predecessors, (93), 15 states have call successors, (15), 14 states have call predecessors, (15), 12 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-05-06 04:12:52,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2021-05-06 04:12:52,613 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 104 [2021-05-06 04:12:52,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:12:52,613 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2021-05-06 04:12:52,613 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 12 states have internal predecessors, (75), 12 states have call successors, (14), 12 states have call predecessors, (14), 10 states have return successors, (12), 10 states have call predecessors, (12), 11 states have call successors, (12) [2021-05-06 04:12:52,613 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2021-05-06 04:12:52,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-05-06 04:12:52,616 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:12:52,616 INFO L523 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 04:12:52,841 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-05-06 04:12:52,841 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:12:52,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:12:52,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1468805930, now seen corresponding path program 10 times [2021-05-06 04:12:52,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:12:52,842 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175860789] [2021-05-06 04:12:52,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:12:52,849 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 04:12:52,849 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [573237032] [2021-05-06 04:12:52,849 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 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 04:12:52,950 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 04:12:52,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 04:12:52,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 25 conjunts are in the unsatisfiable core [2021-05-06 04:12:52,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 04:12:52,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:52,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:52,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:52,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:52,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:52,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:53,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:53,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:53,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:53,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:53,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:53,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:53,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:53,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:53,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:53,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:53,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:53,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:53,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:53,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:53,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:53,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:53,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:53,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:53,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:53,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:53,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:53,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:53,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:53,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:53,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:53,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:53,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:53,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:53,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:53,216 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 20 proven. 425 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 04:12:53,216 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:12:53,217 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175860789] [2021-05-06 04:12:53,217 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 04:12:53,217 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573237032] [2021-05-06 04:12:53,217 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573237032] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 04:12:53,217 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 04:12:53,217 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-05-06 04:12:53,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247378489] [2021-05-06 04:12:53,217 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-06 04:12:53,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:12:53,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-06 04:12:53,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2021-05-06 04:12:53,218 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 13 states have internal predecessors, (82), 13 states have call successors, (15), 13 states have call predecessors, (15), 11 states have return successors, (13), 11 states have call predecessors, (13), 12 states have call successors, (13) [2021-05-06 04:12:53,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:12:53,420 INFO L93 Difference]: Finished difference Result 124 states and 136 transitions. [2021-05-06 04:12:53,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-05-06 04:12:53,421 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 13 states have internal predecessors, (82), 13 states have call successors, (15), 13 states have call predecessors, (15), 11 states have return successors, (13), 11 states have call predecessors, (13), 12 states have call successors, (13) Word has length 113 [2021-05-06 04:12:53,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:12:53,422 INFO L225 Difference]: With dead ends: 124 [2021-05-06 04:12:53,422 INFO L226 Difference]: Without dead ends: 119 [2021-05-06 04:12:53,422 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 169.4ms TimeCoverageRelationStatistics Valid=210, Invalid=342, Unknown=0, NotChecked=0, Total=552 [2021-05-06 04:12:53,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-05-06 04:12:53,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-05-06 04:12:53,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 89 states have (on average 1.1348314606741574) internal successors, (101), 89 states have internal predecessors, (101), 16 states have call successors, (16), 15 states have call predecessors, (16), 13 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-05-06 04:12:53,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 131 transitions. [2021-05-06 04:12:53,429 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 131 transitions. Word has length 113 [2021-05-06 04:12:53,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:12:53,430 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 131 transitions. [2021-05-06 04:12:53,430 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 13 states have internal predecessors, (82), 13 states have call successors, (15), 13 states have call predecessors, (15), 11 states have return successors, (13), 11 states have call predecessors, (13), 12 states have call successors, (13) [2021-05-06 04:12:53,430 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 131 transitions. [2021-05-06 04:12:53,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-05-06 04:12:53,431 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:12:53,431 INFO L523 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 04:12:53,654 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-05-06 04:12:53,655 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:12:53,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:12:53,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1999651676, now seen corresponding path program 11 times [2021-05-06 04:12:53,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:12:53,655 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077616729] [2021-05-06 04:12:53,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:12:53,662 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 04:12:53,662 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1394623028] [2021-05-06 04:12:53,662 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 04:12:53,742 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-05-06 04:12:53,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 04:12:53,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 27 conjunts are in the unsatisfiable core [2021-05-06 04:12:53,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 04:12:53,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:53,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:53,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:53,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:53,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:53,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:53,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:53,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:53,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:53,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:53,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:53,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:53,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:53,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:53,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:53,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:53,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:53,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:53,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:53,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:53,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:53,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:53,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:53,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:53,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:53,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:53,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:54,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:54,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:54,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:54,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:54,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:54,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:54,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:54,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:54,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:54,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:54,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:54,106 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 22 proven. 517 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 04:12:54,106 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:12:54,107 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077616729] [2021-05-06 04:12:54,107 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 04:12:54,107 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394623028] [2021-05-06 04:12:54,107 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394623028] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 04:12:54,107 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 04:12:54,107 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-05-06 04:12:54,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476094702] [2021-05-06 04:12:54,107 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-06 04:12:54,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:12:54,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-06 04:12:54,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2021-05-06 04:12:54,108 INFO L87 Difference]: Start difference. First operand 119 states and 131 transitions. Second operand has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 14 states have internal predecessors, (89), 14 states have call successors, (16), 14 states have call predecessors, (16), 12 states have return successors, (14), 12 states have call predecessors, (14), 13 states have call successors, (14) [2021-05-06 04:12:54,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:12:54,296 INFO L93 Difference]: Finished difference Result 133 states and 146 transitions. [2021-05-06 04:12:54,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-06 04:12:54,297 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 14 states have internal predecessors, (89), 14 states have call successors, (16), 14 states have call predecessors, (16), 12 states have return successors, (14), 12 states have call predecessors, (14), 13 states have call successors, (14) Word has length 122 [2021-05-06 04:12:54,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:12:54,298 INFO L225 Difference]: With dead ends: 133 [2021-05-06 04:12:54,298 INFO L226 Difference]: Without dead ends: 128 [2021-05-06 04:12:54,298 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 193.0ms TimeCoverageRelationStatistics Valid=247, Invalid=403, Unknown=0, NotChecked=0, Total=650 [2021-05-06 04:12:54,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-05-06 04:12:54,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2021-05-06 04:12:54,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 96 states have (on average 1.1354166666666667) internal successors, (109), 96 states have internal predecessors, (109), 17 states have call successors, (17), 16 states have call predecessors, (17), 14 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-05-06 04:12:54,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 141 transitions. [2021-05-06 04:12:54,306 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 141 transitions. Word has length 122 [2021-05-06 04:12:54,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:12:54,306 INFO L480 AbstractCegarLoop]: Abstraction has 128 states and 141 transitions. [2021-05-06 04:12:54,306 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 14 states have internal predecessors, (89), 14 states have call successors, (16), 14 states have call predecessors, (16), 12 states have return successors, (14), 12 states have call predecessors, (14), 13 states have call successors, (14) [2021-05-06 04:12:54,306 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 141 transitions. [2021-05-06 04:12:54,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-05-06 04:12:54,307 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:12:54,307 INFO L523 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 04:12:54,536 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:12:54,537 INFO L428 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:12:54,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:12:54,537 INFO L82 PathProgramCache]: Analyzing trace with hash 881443734, now seen corresponding path program 12 times [2021-05-06 04:12:54,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:12:54,537 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741743200] [2021-05-06 04:12:54,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:12:54,548 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 04:12:54,548 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [489588812] [2021-05-06 04:12:54,548 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 04:12:54,659 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-05-06 04:12:54,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 04:12:54,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 29 conjunts are in the unsatisfiable core [2021-05-06 04:12:54,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 04:12:54,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:54,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:54,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:54,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:54,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:54,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:54,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:54,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:54,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:54,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:54,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:54,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:54,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:54,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:54,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:54,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:54,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:54,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:54,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:54,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:54,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:54,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:54,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:54,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:54,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:54,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:54,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:54,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:54,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:54,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:54,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:54,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:54,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:54,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:54,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:54,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:54,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:54,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:54,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:54,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:54,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:54,982 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 24 proven. 618 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 04:12:54,982 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:12:54,982 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741743200] [2021-05-06 04:12:54,982 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 04:12:54,983 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489588812] [2021-05-06 04:12:54,983 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489588812] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 04:12:54,983 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 04:12:54,983 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-05-06 04:12:54,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201645016] [2021-05-06 04:12:54,983 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-06 04:12:54,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:12:54,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-06 04:12:54,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2021-05-06 04:12:54,984 INFO L87 Difference]: Start difference. First operand 128 states and 141 transitions. Second operand has 16 states, 16 states have (on average 6.0) internal successors, (96), 15 states have internal predecessors, (96), 15 states have call successors, (17), 15 states have call predecessors, (17), 13 states have return successors, (15), 13 states have call predecessors, (15), 14 states have call successors, (15) [2021-05-06 04:12:55,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:12:55,208 INFO L93 Difference]: Finished difference Result 142 states and 156 transitions. [2021-05-06 04:12:55,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-05-06 04:12:55,209 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.0) internal successors, (96), 15 states have internal predecessors, (96), 15 states have call successors, (17), 15 states have call predecessors, (17), 13 states have return successors, (15), 13 states have call predecessors, (15), 14 states have call successors, (15) Word has length 131 [2021-05-06 04:12:55,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:12:55,210 INFO L225 Difference]: With dead ends: 142 [2021-05-06 04:12:55,210 INFO L226 Difference]: Without dead ends: 137 [2021-05-06 04:12:55,210 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 213.0ms TimeCoverageRelationStatistics Valid=287, Invalid=469, Unknown=0, NotChecked=0, Total=756 [2021-05-06 04:12:55,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-05-06 04:12:55,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2021-05-06 04:12:55,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 103 states have (on average 1.1359223300970873) internal successors, (117), 103 states have internal predecessors, (117), 18 states have call successors, (18), 17 states have call predecessors, (18), 15 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-05-06 04:12:55,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 151 transitions. [2021-05-06 04:12:55,221 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 151 transitions. Word has length 131 [2021-05-06 04:12:55,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:12:55,221 INFO L480 AbstractCegarLoop]: Abstraction has 137 states and 151 transitions. [2021-05-06 04:12:55,222 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 6.0) internal successors, (96), 15 states have internal predecessors, (96), 15 states have call successors, (17), 15 states have call predecessors, (17), 13 states have return successors, (15), 13 states have call predecessors, (15), 14 states have call successors, (15) [2021-05-06 04:12:55,222 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 151 transitions. [2021-05-06 04:12:55,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-05-06 04:12:55,223 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:12:55,223 INFO L523 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 13, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 04:12:55,436 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-05-06 04:12:55,437 INFO L428 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:12:55,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:12:55,437 INFO L82 PathProgramCache]: Analyzing trace with hash 2089018524, now seen corresponding path program 13 times [2021-05-06 04:12:55,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:12:55,438 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561657660] [2021-05-06 04:12:55,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:12:55,444 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 04:12:55,444 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1351124474] [2021-05-06 04:12:55,444 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY 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 04:12:55,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 04:12:55,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 31 conjunts are in the unsatisfiable core [2021-05-06 04:12:55,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 04:12:55,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:55,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:55,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:55,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:55,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:55,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:55,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:55,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:55,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:55,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:55,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:55,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:55,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:55,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:55,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:55,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:55,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:55,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:55,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:55,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:55,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:55,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:55,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:55,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:55,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:55,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:55,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:55,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:55,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:55,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:55,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:55,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:55,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:55,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:55,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:55,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:55,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:55,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:55,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:55,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:55,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:55,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:55,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:55,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:55,884 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 26 proven. 728 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 04:12:55,884 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:12:55,884 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561657660] [2021-05-06 04:12:55,884 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 04:12:55,884 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351124474] [2021-05-06 04:12:55,884 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351124474] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 04:12:55,884 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 04:12:55,884 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-05-06 04:12:55,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62929599] [2021-05-06 04:12:55,887 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-06 04:12:55,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:12:55,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-06 04:12:55,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2021-05-06 04:12:55,888 INFO L87 Difference]: Start difference. First operand 137 states and 151 transitions. Second operand has 17 states, 17 states have (on average 6.0588235294117645) internal successors, (103), 16 states have internal predecessors, (103), 16 states have call successors, (18), 16 states have call predecessors, (18), 14 states have return successors, (16), 14 states have call predecessors, (16), 15 states have call successors, (16) [2021-05-06 04:12:56,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:12:56,112 INFO L93 Difference]: Finished difference Result 151 states and 166 transitions. [2021-05-06 04:12:56,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-05-06 04:12:56,112 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.0588235294117645) internal successors, (103), 16 states have internal predecessors, (103), 16 states have call successors, (18), 16 states have call predecessors, (18), 14 states have return successors, (16), 14 states have call predecessors, (16), 15 states have call successors, (16) Word has length 140 [2021-05-06 04:12:56,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:12:56,113 INFO L225 Difference]: With dead ends: 151 [2021-05-06 04:12:56,113 INFO L226 Difference]: Without dead ends: 146 [2021-05-06 04:12:56,114 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 220.1ms TimeCoverageRelationStatistics Valid=330, Invalid=540, Unknown=0, NotChecked=0, Total=870 [2021-05-06 04:12:56,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-05-06 04:12:56,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2021-05-06 04:12:56,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 110 states have (on average 1.1363636363636365) internal successors, (125), 110 states have internal predecessors, (125), 19 states have call successors, (19), 18 states have call predecessors, (19), 16 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-05-06 04:12:56,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 161 transitions. [2021-05-06 04:12:56,121 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 161 transitions. Word has length 140 [2021-05-06 04:12:56,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:12:56,122 INFO L480 AbstractCegarLoop]: Abstraction has 146 states and 161 transitions. [2021-05-06 04:12:56,122 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 6.0588235294117645) internal successors, (103), 16 states have internal predecessors, (103), 16 states have call successors, (18), 16 states have call predecessors, (18), 14 states have return successors, (16), 14 states have call predecessors, (16), 15 states have call successors, (16) [2021-05-06 04:12:56,122 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 161 transitions. [2021-05-06 04:12:56,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-05-06 04:12:56,123 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:12:56,123 INFO L523 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 14, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 04:12:56,336 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-05-06 04:12:56,337 INFO L428 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:12:56,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:12:56,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1088976298, now seen corresponding path program 14 times [2021-05-06 04:12:56,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:12:56,337 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896087257] [2021-05-06 04:12:56,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:12:56,344 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 04:12:56,344 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1245442547] [2021-05-06 04:12:56,344 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 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:12:56,421 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 04:12:56,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 04:12:56,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 33 conjunts are in the unsatisfiable core [2021-05-06 04:12:56,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 04:12:56,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:56,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:56,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:56,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:56,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:56,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:56,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:56,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:56,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:56,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:56,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:56,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:56,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:56,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:56,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:56,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:56,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:56,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:56,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:56,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:56,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:56,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:56,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:56,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:56,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:56,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:56,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:56,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:56,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:56,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:56,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:56,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:56,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:56,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:56,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:56,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:56,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:56,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:56,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:56,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:56,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:56,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:56,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:56,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:56,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:56,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:56,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:56,812 INFO L134 CoverageAnalysis]: Checked inductivity of 879 backedges. 28 proven. 847 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 04:12:56,812 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:12:56,812 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896087257] [2021-05-06 04:12:56,812 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 04:12:56,812 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245442547] [2021-05-06 04:12:56,813 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245442547] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 04:12:56,813 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 04:12:56,813 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-05-06 04:12:56,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470851924] [2021-05-06 04:12:56,813 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-05-06 04:12:56,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:12:56,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-05-06 04:12:56,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2021-05-06 04:12:56,814 INFO L87 Difference]: Start difference. First operand 146 states and 161 transitions. Second operand has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 17 states have internal predecessors, (110), 17 states have call successors, (19), 17 states have call predecessors, (19), 15 states have return successors, (17), 15 states have call predecessors, (17), 16 states have call successors, (17) [2021-05-06 04:12:57,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:12:57,066 INFO L93 Difference]: Finished difference Result 160 states and 176 transitions. [2021-05-06 04:12:57,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-05-06 04:12:57,066 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 17 states have internal predecessors, (110), 17 states have call successors, (19), 17 states have call predecessors, (19), 15 states have return successors, (17), 15 states have call predecessors, (17), 16 states have call successors, (17) Word has length 149 [2021-05-06 04:12:57,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:12:57,067 INFO L225 Difference]: With dead ends: 160 [2021-05-06 04:12:57,067 INFO L226 Difference]: Without dead ends: 155 [2021-05-06 04:12:57,068 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 248.1ms TimeCoverageRelationStatistics Valid=376, Invalid=616, Unknown=0, NotChecked=0, Total=992 [2021-05-06 04:12:57,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-05-06 04:12:57,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2021-05-06 04:12:57,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 117 states have (on average 1.1367521367521367) internal successors, (133), 117 states have internal predecessors, (133), 20 states have call successors, (20), 19 states have call predecessors, (20), 17 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-05-06 04:12:57,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 171 transitions. [2021-05-06 04:12:57,076 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 171 transitions. Word has length 149 [2021-05-06 04:12:57,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:12:57,077 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 171 transitions. [2021-05-06 04:12:57,077 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 17 states have internal predecessors, (110), 17 states have call successors, (19), 17 states have call predecessors, (19), 15 states have return successors, (17), 15 states have call predecessors, (17), 16 states have call successors, (17) [2021-05-06 04:12:57,077 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 171 transitions. [2021-05-06 04:12:57,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-05-06 04:12:57,078 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:12:57,078 INFO L523 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 15, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 04:12:57,292 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-05-06 04:12:57,293 INFO L428 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:12:57,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:12:57,293 INFO L82 PathProgramCache]: Analyzing trace with hash -2060864036, now seen corresponding path program 15 times [2021-05-06 04:12:57,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:12:57,293 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714243214] [2021-05-06 04:12:57,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:12:57,299 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 04:12:57,299 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [682766334] [2021-05-06 04:12:57,299 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 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:12:57,403 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-05-06 04:12:57,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 04:12:57,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 35 conjunts are in the unsatisfiable core [2021-05-06 04:12:57,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 04:12:57,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:57,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:57,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:57,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:57,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:57,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:57,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:57,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:57,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:57,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:57,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:57,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:57,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:57,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:57,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:57,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:57,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:57,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:57,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:57,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:57,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:57,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:57,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:57,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:57,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:57,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:57,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:57,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:57,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:57,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:57,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:57,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:57,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:57,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:57,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:57,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:57,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:57,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:57,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:57,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:57,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:57,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:57,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:57,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:57,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:57,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:57,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:57,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:57,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:57,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:57,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1009 backedges. 30 proven. 975 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 04:12:57,793 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:12:57,794 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714243214] [2021-05-06 04:12:57,794 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 04:12:57,794 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682766334] [2021-05-06 04:12:57,794 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682766334] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 04:12:57,794 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 04:12:57,794 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-05-06 04:12:57,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738396646] [2021-05-06 04:12:57,794 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-06 04:12:57,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:12:57,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-06 04:12:57,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2021-05-06 04:12:57,795 INFO L87 Difference]: Start difference. First operand 155 states and 171 transitions. Second operand has 19 states, 19 states have (on average 6.157894736842105) internal successors, (117), 18 states have internal predecessors, (117), 18 states have call successors, (20), 18 states have call predecessors, (20), 16 states have return successors, (18), 16 states have call predecessors, (18), 17 states have call successors, (18) [2021-05-06 04:12:58,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:12:58,080 INFO L93 Difference]: Finished difference Result 169 states and 186 transitions. [2021-05-06 04:12:58,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-05-06 04:12:58,081 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.157894736842105) internal successors, (117), 18 states have internal predecessors, (117), 18 states have call successors, (20), 18 states have call predecessors, (20), 16 states have return successors, (18), 16 states have call predecessors, (18), 17 states have call successors, (18) Word has length 158 [2021-05-06 04:12:58,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:12:58,081 INFO L225 Difference]: With dead ends: 169 [2021-05-06 04:12:58,082 INFO L226 Difference]: Without dead ends: 164 [2021-05-06 04:12:58,082 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 294.7ms TimeCoverageRelationStatistics Valid=425, Invalid=697, Unknown=0, NotChecked=0, Total=1122 [2021-05-06 04:12:58,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-05-06 04:12:58,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2021-05-06 04:12:58,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 124 states have (on average 1.1370967741935485) internal successors, (141), 124 states have internal predecessors, (141), 21 states have call successors, (21), 20 states have call predecessors, (21), 18 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-05-06 04:12:58,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 181 transitions. [2021-05-06 04:12:58,090 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 181 transitions. Word has length 158 [2021-05-06 04:12:58,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:12:58,090 INFO L480 AbstractCegarLoop]: Abstraction has 164 states and 181 transitions. [2021-05-06 04:12:58,091 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 6.157894736842105) internal successors, (117), 18 states have internal predecessors, (117), 18 states have call successors, (20), 18 states have call predecessors, (20), 16 states have return successors, (18), 16 states have call predecessors, (18), 17 states have call successors, (18) [2021-05-06 04:12:58,091 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 181 transitions. [2021-05-06 04:12:58,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-05-06 04:12:58,092 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:12:58,092 INFO L523 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 16, 16, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 04:12:58,305 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:12:58,305 INFO L428 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:12:58,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:12:58,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1479991018, now seen corresponding path program 16 times [2021-05-06 04:12:58,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:12:58,305 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944228330] [2021-05-06 04:12:58,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:12:58,310 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 04:12:58,310 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1087448728] [2021-05-06 04:12:58,310 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 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:12:58,416 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 04:12:58,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 04:12:58,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 37 conjunts are in the unsatisfiable core [2021-05-06 04:12:58,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 04:12:58,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:58,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:58,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:58,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:58,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:58,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:58,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:58,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:58,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:58,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:58,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:58,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:58,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:58,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:58,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:58,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:58,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:58,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:58,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:58,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:58,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:58,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:58,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:58,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:58,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:58,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:58,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:58,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:58,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:58,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:58,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:58,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:58,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:58,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:58,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:58,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:58,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:58,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:58,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:58,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:58,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:58,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:58,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:58,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:58,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:58,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:58,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:58,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:58,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:58,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:58,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:58,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:58,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:58,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 32 proven. 1112 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 04:12:58,810 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:12:58,810 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944228330] [2021-05-06 04:12:58,810 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 04:12:58,810 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087448728] [2021-05-06 04:12:58,810 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087448728] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 04:12:58,811 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 04:12:58,811 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2021-05-06 04:12:58,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758776425] [2021-05-06 04:12:58,811 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-05-06 04:12:58,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:12:58,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-05-06 04:12:58,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2021-05-06 04:12:58,811 INFO L87 Difference]: Start difference. First operand 164 states and 181 transitions. Second operand has 20 states, 20 states have (on average 6.2) internal successors, (124), 19 states have internal predecessors, (124), 19 states have call successors, (21), 19 states have call predecessors, (21), 17 states have return successors, (19), 17 states have call predecessors, (19), 18 states have call successors, (19) [2021-05-06 04:12:59,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:12:59,138 INFO L93 Difference]: Finished difference Result 178 states and 196 transitions. [2021-05-06 04:12:59,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-06 04:12:59,149 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.2) internal successors, (124), 19 states have internal predecessors, (124), 19 states have call successors, (21), 19 states have call predecessors, (21), 17 states have return successors, (19), 17 states have call predecessors, (19), 18 states have call successors, (19) Word has length 167 [2021-05-06 04:12:59,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:12:59,150 INFO L225 Difference]: With dead ends: 178 [2021-05-06 04:12:59,150 INFO L226 Difference]: Without dead ends: 173 [2021-05-06 04:12:59,151 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 307.8ms TimeCoverageRelationStatistics Valid=477, Invalid=783, Unknown=0, NotChecked=0, Total=1260 [2021-05-06 04:12:59,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-05-06 04:12:59,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2021-05-06 04:12:59,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 131 states have (on average 1.1374045801526718) internal successors, (149), 131 states have internal predecessors, (149), 22 states have call successors, (22), 21 states have call predecessors, (22), 19 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-05-06 04:12:59,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 191 transitions. [2021-05-06 04:12:59,160 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 191 transitions. Word has length 167 [2021-05-06 04:12:59,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:12:59,160 INFO L480 AbstractCegarLoop]: Abstraction has 173 states and 191 transitions. [2021-05-06 04:12:59,160 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 6.2) internal successors, (124), 19 states have internal predecessors, (124), 19 states have call successors, (21), 19 states have call predecessors, (21), 17 states have return successors, (19), 17 states have call predecessors, (19), 18 states have call successors, (19) [2021-05-06 04:12:59,160 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 191 transitions. [2021-05-06 04:12:59,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-05-06 04:12:59,162 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:12:59,162 INFO L523 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 17, 17, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 04:12:59,376 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:12:59,377 INFO L428 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:12:59,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:12:59,377 INFO L82 PathProgramCache]: Analyzing trace with hash 318093084, now seen corresponding path program 17 times [2021-05-06 04:12:59,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:12:59,377 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205559342] [2021-05-06 04:12:59,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:12:59,385 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 04:12:59,386 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1821368215] [2021-05-06 04:12:59,386 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 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:12:59,497 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-05-06 04:12:59,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 04:12:59,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 39 conjunts are in the unsatisfiable core [2021-05-06 04:12:59,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 04:12:59,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:59,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:59,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:59,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:59,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:59,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:59,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:59,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:59,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:59,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:59,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:59,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:59,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:59,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:59,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:59,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:59,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:59,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:59,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:59,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:59,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:59,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:59,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:59,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:59,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:59,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:59,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:59,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:59,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:59,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:59,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:59,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:59,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:59,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:59,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:59,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:59,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:59,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:59,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:59,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:59,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:59,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:59,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:59,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:59,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:59,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:59,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:59,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:59,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:59,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:59,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:59,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:59,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:59,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:59,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:59,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:12:59,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 34 proven. 1258 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 04:12:59,923 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:12:59,923 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205559342] [2021-05-06 04:12:59,923 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 04:12:59,923 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821368215] [2021-05-06 04:12:59,923 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821368215] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 04:12:59,924 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 04:12:59,924 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2021-05-06 04:12:59,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136308204] [2021-05-06 04:12:59,924 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-06 04:12:59,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:12:59,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-06 04:12:59,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2021-05-06 04:12:59,925 INFO L87 Difference]: Start difference. First operand 173 states and 191 transitions. Second operand has 21 states, 21 states have (on average 6.238095238095238) internal successors, (131), 20 states have internal predecessors, (131), 20 states have call successors, (22), 20 states have call predecessors, (22), 18 states have return successors, (20), 18 states have call predecessors, (20), 19 states have call successors, (20) [2021-05-06 04:13:00,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:13:00,243 INFO L93 Difference]: Finished difference Result 187 states and 206 transitions. [2021-05-06 04:13:00,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-05-06 04:13:00,244 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.238095238095238) internal successors, (131), 20 states have internal predecessors, (131), 20 states have call successors, (22), 20 states have call predecessors, (22), 18 states have return successors, (20), 18 states have call predecessors, (20), 19 states have call successors, (20) Word has length 176 [2021-05-06 04:13:00,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:13:00,245 INFO L225 Difference]: With dead ends: 187 [2021-05-06 04:13:00,245 INFO L226 Difference]: Without dead ends: 182 [2021-05-06 04:13:00,246 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 346.3ms TimeCoverageRelationStatistics Valid=532, Invalid=874, Unknown=0, NotChecked=0, Total=1406 [2021-05-06 04:13:00,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-05-06 04:13:00,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2021-05-06 04:13:00,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 138 states have (on average 1.1376811594202898) internal successors, (157), 138 states have internal predecessors, (157), 23 states have call successors, (23), 22 states have call predecessors, (23), 20 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-05-06 04:13:00,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 201 transitions. [2021-05-06 04:13:00,254 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 201 transitions. Word has length 176 [2021-05-06 04:13:00,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:13:00,254 INFO L480 AbstractCegarLoop]: Abstraction has 182 states and 201 transitions. [2021-05-06 04:13:00,255 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 6.238095238095238) internal successors, (131), 20 states have internal predecessors, (131), 20 states have call successors, (22), 20 states have call predecessors, (22), 18 states have return successors, (20), 18 states have call predecessors, (20), 19 states have call successors, (20) [2021-05-06 04:13:00,255 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 201 transitions. [2021-05-06 04:13:00,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-05-06 04:13:00,256 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:13:00,256 INFO L523 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 18, 18, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 04:13:00,481 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-05-06 04:13:00,481 INFO L428 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:13:00,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:13:00,481 INFO L82 PathProgramCache]: Analyzing trace with hash 994740182, now seen corresponding path program 18 times [2021-05-06 04:13:00,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:13:00,482 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227872727] [2021-05-06 04:13:00,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:13:00,488 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 04:13:00,488 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1451379528] [2021-05-06 04:13:00,488 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 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:13:00,651 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-05-06 04:13:00,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 04:13:00,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 41 conjunts are in the unsatisfiable core [2021-05-06 04:13:00,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 04:13:00,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:00,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:00,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:00,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:00,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:00,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:00,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:00,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:00,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:00,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:00,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:00,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:00,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:00,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:00,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:00,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:00,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:00,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:00,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:00,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:00,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:00,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:00,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:00,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:00,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:00,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:00,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:00,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:00,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:00,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:00,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:00,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:00,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:00,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:00,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:00,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:00,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:00,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:00,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:00,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:00,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:00,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:00,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:00,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:00,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:00,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:00,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:00,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:00,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:00,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:00,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:01,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:01,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:01,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:01,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:01,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:01,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:01,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:01,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:01,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1453 backedges. 36 proven. 1413 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 04:13:01,105 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:13:01,106 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227872727] [2021-05-06 04:13:01,106 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 04:13:01,106 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451379528] [2021-05-06 04:13:01,106 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451379528] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 04:13:01,106 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 04:13:01,106 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2021-05-06 04:13:01,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661877681] [2021-05-06 04:13:01,106 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-05-06 04:13:01,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:13:01,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-05-06 04:13:01,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2021-05-06 04:13:01,107 INFO L87 Difference]: Start difference. First operand 182 states and 201 transitions. Second operand has 22 states, 22 states have (on average 6.2727272727272725) internal successors, (138), 21 states have internal predecessors, (138), 21 states have call successors, (23), 21 states have call predecessors, (23), 19 states have return successors, (21), 19 states have call predecessors, (21), 20 states have call successors, (21) [2021-05-06 04:13:01,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:13:01,469 INFO L93 Difference]: Finished difference Result 196 states and 216 transitions. [2021-05-06 04:13:01,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-05-06 04:13:01,471 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.2727272727272725) internal successors, (138), 21 states have internal predecessors, (138), 21 states have call successors, (23), 21 states have call predecessors, (23), 19 states have return successors, (21), 19 states have call predecessors, (21), 20 states have call successors, (21) Word has length 185 [2021-05-06 04:13:01,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:13:01,472 INFO L225 Difference]: With dead ends: 196 [2021-05-06 04:13:01,472 INFO L226 Difference]: Without dead ends: 191 [2021-05-06 04:13:01,473 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 380.2ms TimeCoverageRelationStatistics Valid=590, Invalid=970, Unknown=0, NotChecked=0, Total=1560 [2021-05-06 04:13:01,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-05-06 04:13:01,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2021-05-06 04:13:01,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 145 states have (on average 1.1379310344827587) internal successors, (165), 145 states have internal predecessors, (165), 24 states have call successors, (24), 23 states have call predecessors, (24), 21 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-05-06 04:13:01,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 211 transitions. [2021-05-06 04:13:01,486 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 211 transitions. Word has length 185 [2021-05-06 04:13:01,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:13:01,487 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 211 transitions. [2021-05-06 04:13:01,487 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 6.2727272727272725) internal successors, (138), 21 states have internal predecessors, (138), 21 states have call successors, (23), 21 states have call predecessors, (23), 19 states have return successors, (21), 19 states have call predecessors, (21), 20 states have call successors, (21) [2021-05-06 04:13:01,487 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 211 transitions. [2021-05-06 04:13:01,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-05-06 04:13:01,489 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:13:01,489 INFO L523 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 19, 19, 19, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 04:13:01,704 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-05-06 04:13:01,705 INFO L428 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:13:01,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:13:01,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1522264156, now seen corresponding path program 19 times [2021-05-06 04:13:01,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:13:01,705 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470079421] [2021-05-06 04:13:01,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:13:01,712 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 04:13:01,712 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [110271988] [2021-05-06 04:13:01,718 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:13:01,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 04:13:01,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 43 conjunts are in the unsatisfiable core [2021-05-06 04:13:01,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 04:13:01,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:01,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:01,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:01,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:01,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:01,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:01,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:01,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:01,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:01,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:01,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:01,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:01,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:01,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:01,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:01,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:01,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:01,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:01,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:01,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:01,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:01,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:01,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:01,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:01,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:01,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:01,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:01,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:01,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:01,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:02,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:02,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:02,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:02,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:02,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:02,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:02,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:02,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:02,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:02,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:02,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:02,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:02,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:02,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:02,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:02,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:02,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:02,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:02,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:02,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:02,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:02,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:02,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:02,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:02,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:02,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:02,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:02,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:02,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:02,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:02,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:02,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:02,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1619 backedges. 38 proven. 1577 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 04:13:02,302 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:13:02,302 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470079421] [2021-05-06 04:13:02,302 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 04:13:02,302 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110271988] [2021-05-06 04:13:02,302 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110271988] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 04:13:02,303 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 04:13:02,303 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2021-05-06 04:13:02,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192778012] [2021-05-06 04:13:02,303 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-05-06 04:13:02,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:13:02,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-05-06 04:13:02,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2021-05-06 04:13:02,304 INFO L87 Difference]: Start difference. First operand 191 states and 211 transitions. Second operand has 23 states, 23 states have (on average 6.304347826086956) internal successors, (145), 22 states have internal predecessors, (145), 22 states have call successors, (24), 22 states have call predecessors, (24), 20 states have return successors, (22), 20 states have call predecessors, (22), 21 states have call successors, (22) [2021-05-06 04:13:02,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:13:02,677 INFO L93 Difference]: Finished difference Result 205 states and 226 transitions. [2021-05-06 04:13:02,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-05-06 04:13:02,677 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 6.304347826086956) internal successors, (145), 22 states have internal predecessors, (145), 22 states have call successors, (24), 22 states have call predecessors, (24), 20 states have return successors, (22), 20 states have call predecessors, (22), 21 states have call successors, (22) Word has length 194 [2021-05-06 04:13:02,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:13:02,678 INFO L225 Difference]: With dead ends: 205 [2021-05-06 04:13:02,678 INFO L226 Difference]: Without dead ends: 200 [2021-05-06 04:13:02,679 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 418.2ms TimeCoverageRelationStatistics Valid=651, Invalid=1071, Unknown=0, NotChecked=0, Total=1722 [2021-05-06 04:13:02,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-05-06 04:13:02,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2021-05-06 04:13:02,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 152 states have (on average 1.138157894736842) internal successors, (173), 152 states have internal predecessors, (173), 25 states have call successors, (25), 24 states have call predecessors, (25), 22 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2021-05-06 04:13:02,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 221 transitions. [2021-05-06 04:13:02,688 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 221 transitions. Word has length 194 [2021-05-06 04:13:02,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:13:02,688 INFO L480 AbstractCegarLoop]: Abstraction has 200 states and 221 transitions. [2021-05-06 04:13:02,689 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 6.304347826086956) internal successors, (145), 22 states have internal predecessors, (145), 22 states have call successors, (24), 22 states have call predecessors, (24), 20 states have return successors, (22), 20 states have call predecessors, (22), 21 states have call successors, (22) [2021-05-06 04:13:02,689 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 221 transitions. [2021-05-06 04:13:02,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-05-06 04:13:02,690 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:13:02,690 INFO L523 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 20, 20, 20, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 04:13:02,904 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:13:02,905 INFO L428 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:13:02,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:13:02,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1934081686, now seen corresponding path program 20 times [2021-05-06 04:13:02,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:13:02,905 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511420618] [2021-05-06 04:13:02,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:13:02,911 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 04:13:02,912 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1750574912] [2021-05-06 04:13:02,912 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 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:13:03,007 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 04:13:03,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 04:13:03,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 45 conjunts are in the unsatisfiable core [2021-05-06 04:13:03,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 04:13:03,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:03,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1794 backedges. 40 proven. 1750 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 04:13:03,509 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:13:03,509 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511420618] [2021-05-06 04:13:03,509 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 04:13:03,509 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750574912] [2021-05-06 04:13:03,509 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750574912] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 04:13:03,509 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 04:13:03,509 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2021-05-06 04:13:03,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038587388] [2021-05-06 04:13:03,510 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-05-06 04:13:03,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:13:03,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-05-06 04:13:03,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2021-05-06 04:13:03,510 INFO L87 Difference]: Start difference. First operand 200 states and 221 transitions. Second operand has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 23 states have internal predecessors, (152), 23 states have call successors, (25), 23 states have call predecessors, (25), 21 states have return successors, (23), 21 states have call predecessors, (23), 22 states have call successors, (23) [2021-05-06 04:13:03,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:13:03,915 INFO L93 Difference]: Finished difference Result 214 states and 236 transitions. [2021-05-06 04:13:03,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-05-06 04:13:03,915 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 23 states have internal predecessors, (152), 23 states have call successors, (25), 23 states have call predecessors, (25), 21 states have return successors, (23), 21 states have call predecessors, (23), 22 states have call successors, (23) Word has length 203 [2021-05-06 04:13:03,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:13:03,916 INFO L225 Difference]: With dead ends: 214 [2021-05-06 04:13:03,916 INFO L226 Difference]: Without dead ends: 209 [2021-05-06 04:13:03,917 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 444.4ms TimeCoverageRelationStatistics Valid=715, Invalid=1177, Unknown=0, NotChecked=0, Total=1892 [2021-05-06 04:13:03,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-05-06 04:13:03,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2021-05-06 04:13:03,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 159 states have (on average 1.1383647798742138) internal successors, (181), 159 states have internal predecessors, (181), 26 states have call successors, (26), 25 states have call predecessors, (26), 23 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-05-06 04:13:03,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 231 transitions. [2021-05-06 04:13:03,926 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 231 transitions. Word has length 203 [2021-05-06 04:13:03,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:13:03,926 INFO L480 AbstractCegarLoop]: Abstraction has 209 states and 231 transitions. [2021-05-06 04:13:03,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 23 states have internal predecessors, (152), 23 states have call successors, (25), 23 states have call predecessors, (25), 21 states have return successors, (23), 21 states have call predecessors, (23), 22 states have call successors, (23) [2021-05-06 04:13:03,926 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 231 transitions. [2021-05-06 04:13:03,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-05-06 04:13:03,927 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:13:03,928 INFO L523 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 21, 21, 21, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 04:13:04,140 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-05-06 04:13:04,141 INFO L428 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:13:04,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:13:04,141 INFO L82 PathProgramCache]: Analyzing trace with hash -2075113060, now seen corresponding path program 21 times [2021-05-06 04:13:04,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:13:04,141 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088316879] [2021-05-06 04:13:04,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:13:04,150 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 04:13:04,150 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [622006992] [2021-05-06 04:13:04,150 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 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:13:04,285 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-05-06 04:13:04,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 04:13:04,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 47 conjunts are in the unsatisfiable core [2021-05-06 04:13:04,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 04:13:04,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:04,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1978 backedges. 42 proven. 1932 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 04:13:04,811 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:13:04,811 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088316879] [2021-05-06 04:13:04,811 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 04:13:04,811 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622006992] [2021-05-06 04:13:04,811 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622006992] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 04:13:04,811 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 04:13:04,811 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2021-05-06 04:13:04,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774955227] [2021-05-06 04:13:04,812 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-06 04:13:04,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:13:04,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-06 04:13:04,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2021-05-06 04:13:04,813 INFO L87 Difference]: Start difference. First operand 209 states and 231 transitions. Second operand has 25 states, 25 states have (on average 6.36) internal successors, (159), 24 states have internal predecessors, (159), 24 states have call successors, (26), 24 states have call predecessors, (26), 22 states have return successors, (24), 22 states have call predecessors, (24), 23 states have call successors, (24) [2021-05-06 04:13:05,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:13:05,204 INFO L93 Difference]: Finished difference Result 223 states and 246 transitions. [2021-05-06 04:13:05,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-05-06 04:13:05,205 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 6.36) internal successors, (159), 24 states have internal predecessors, (159), 24 states have call successors, (26), 24 states have call predecessors, (26), 22 states have return successors, (24), 22 states have call predecessors, (24), 23 states have call successors, (24) Word has length 212 [2021-05-06 04:13:05,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:13:05,206 INFO L225 Difference]: With dead ends: 223 [2021-05-06 04:13:05,206 INFO L226 Difference]: Without dead ends: 218 [2021-05-06 04:13:05,207 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 476.6ms TimeCoverageRelationStatistics Valid=782, Invalid=1288, Unknown=0, NotChecked=0, Total=2070 [2021-05-06 04:13:05,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-05-06 04:13:05,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2021-05-06 04:13:05,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 166 states have (on average 1.1385542168674698) internal successors, (189), 166 states have internal predecessors, (189), 27 states have call successors, (27), 26 states have call predecessors, (27), 24 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-05-06 04:13:05,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 241 transitions. [2021-05-06 04:13:05,215 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 241 transitions. Word has length 212 [2021-05-06 04:13:05,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:13:05,216 INFO L480 AbstractCegarLoop]: Abstraction has 218 states and 241 transitions. [2021-05-06 04:13:05,216 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 6.36) internal successors, (159), 24 states have internal predecessors, (159), 24 states have call successors, (26), 24 states have call predecessors, (26), 22 states have return successors, (24), 22 states have call predecessors, (24), 23 states have call successors, (24) [2021-05-06 04:13:05,216 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 241 transitions. [2021-05-06 04:13:05,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-05-06 04:13:05,217 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:13:05,217 INFO L523 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 22, 22, 22, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 04:13:05,440 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:13:05,441 INFO L428 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:13:05,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:13:05,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1234385578, now seen corresponding path program 22 times [2021-05-06 04:13:05,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:13:05,441 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119485747] [2021-05-06 04:13:05,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:13:05,449 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 04:13:05,449 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [799875723] [2021-05-06 04:13:05,449 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 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:13:05,570 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 04:13:05,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 04:13:05,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 49 conjunts are in the unsatisfiable core [2021-05-06 04:13:05,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 04:13:05,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:05,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:05,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:05,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:05,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:05,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:05,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:05,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:05,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:05,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:05,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:05,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:05,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:05,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:05,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:05,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:05,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:05,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:05,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:05,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:05,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:05,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:05,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:05,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:05,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:05,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:05,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:05,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:05,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:05,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:05,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:05,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:05,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:05,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:05,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:05,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:05,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:05,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:05,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:05,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:05,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:05,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:05,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:05,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:05,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:05,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:05,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:05,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:05,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:05,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:05,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:05,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:05,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:05,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:05,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:05,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:05,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:05,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:05,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:05,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:06,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:06,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:06,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:06,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:06,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:06,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:06,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:06,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:06,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:06,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:06,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:06,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2171 backedges. 44 proven. 2123 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 04:13:06,116 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:13:06,116 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119485747] [2021-05-06 04:13:06,116 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 04:13:06,116 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799875723] [2021-05-06 04:13:06,116 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799875723] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 04:13:06,116 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 04:13:06,116 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2021-05-06 04:13:06,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572557578] [2021-05-06 04:13:06,117 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-05-06 04:13:06,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:13:06,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-05-06 04:13:06,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2021-05-06 04:13:06,118 INFO L87 Difference]: Start difference. First operand 218 states and 241 transitions. Second operand has 26 states, 26 states have (on average 6.384615384615385) internal successors, (166), 25 states have internal predecessors, (166), 25 states have call successors, (27), 25 states have call predecessors, (27), 23 states have return successors, (25), 23 states have call predecessors, (25), 24 states have call successors, (25) [2021-05-06 04:13:06,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:13:06,613 INFO L93 Difference]: Finished difference Result 232 states and 256 transitions. [2021-05-06 04:13:06,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-05-06 04:13:06,614 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.384615384615385) internal successors, (166), 25 states have internal predecessors, (166), 25 states have call successors, (27), 25 states have call predecessors, (27), 23 states have return successors, (25), 23 states have call predecessors, (25), 24 states have call successors, (25) Word has length 221 [2021-05-06 04:13:06,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:13:06,615 INFO L225 Difference]: With dead ends: 232 [2021-05-06 04:13:06,615 INFO L226 Difference]: Without dead ends: 227 [2021-05-06 04:13:06,616 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 537.0ms TimeCoverageRelationStatistics Valid=852, Invalid=1404, Unknown=0, NotChecked=0, Total=2256 [2021-05-06 04:13:06,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-05-06 04:13:06,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2021-05-06 04:13:06,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 173 states have (on average 1.138728323699422) internal successors, (197), 173 states have internal predecessors, (197), 28 states have call successors, (28), 27 states have call predecessors, (28), 25 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-05-06 04:13:06,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 251 transitions. [2021-05-06 04:13:06,626 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 251 transitions. Word has length 221 [2021-05-06 04:13:06,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:13:06,626 INFO L480 AbstractCegarLoop]: Abstraction has 227 states and 251 transitions. [2021-05-06 04:13:06,627 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 6.384615384615385) internal successors, (166), 25 states have internal predecessors, (166), 25 states have call successors, (27), 25 states have call predecessors, (27), 23 states have return successors, (25), 23 states have call predecessors, (25), 24 states have call successors, (25) [2021-05-06 04:13:06,627 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 251 transitions. [2021-05-06 04:13:06,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-05-06 04:13:06,628 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:13:06,628 INFO L523 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 23, 23, 23, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 04:13:06,851 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-05-06 04:13:06,852 INFO L428 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:13:06,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:13:06,852 INFO L82 PathProgramCache]: Analyzing trace with hash -360260900, now seen corresponding path program 23 times [2021-05-06 04:13:06,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:13:06,852 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689515443] [2021-05-06 04:13:06,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:13:06,863 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 04:13:06,864 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [978723989] [2021-05-06 04:13:06,864 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 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:13:07,030 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2021-05-06 04:13:07,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 04:13:07,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 51 conjunts are in the unsatisfiable core [2021-05-06 04:13:07,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 04:13:07,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:07,630 INFO L134 CoverageAnalysis]: Checked inductivity of 2373 backedges. 46 proven. 2323 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 04:13:07,630 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:13:07,630 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689515443] [2021-05-06 04:13:07,630 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 04:13:07,630 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978723989] [2021-05-06 04:13:07,630 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978723989] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 04:13:07,630 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 04:13:07,631 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2021-05-06 04:13:07,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370181449] [2021-05-06 04:13:07,631 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-05-06 04:13:07,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:13:07,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-05-06 04:13:07,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2021-05-06 04:13:07,632 INFO L87 Difference]: Start difference. First operand 227 states and 251 transitions. Second operand has 27 states, 27 states have (on average 6.407407407407407) internal successors, (173), 26 states have internal predecessors, (173), 26 states have call successors, (28), 26 states have call predecessors, (28), 24 states have return successors, (26), 24 states have call predecessors, (26), 25 states have call successors, (26) [2021-05-06 04:13:08,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:13:08,064 INFO L93 Difference]: Finished difference Result 241 states and 266 transitions. [2021-05-06 04:13:08,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-05-06 04:13:08,064 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 6.407407407407407) internal successors, (173), 26 states have internal predecessors, (173), 26 states have call successors, (28), 26 states have call predecessors, (28), 24 states have return successors, (26), 24 states have call predecessors, (26), 25 states have call successors, (26) Word has length 230 [2021-05-06 04:13:08,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:13:08,065 INFO L225 Difference]: With dead ends: 241 [2021-05-06 04:13:08,065 INFO L226 Difference]: Without dead ends: 236 [2021-05-06 04:13:08,066 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 533.2ms TimeCoverageRelationStatistics Valid=925, Invalid=1525, Unknown=0, NotChecked=0, Total=2450 [2021-05-06 04:13:08,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-05-06 04:13:08,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2021-05-06 04:13:08,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 180 states have (on average 1.1388888888888888) internal successors, (205), 180 states have internal predecessors, (205), 29 states have call successors, (29), 28 states have call predecessors, (29), 26 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-05-06 04:13:08,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 261 transitions. [2021-05-06 04:13:08,075 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 261 transitions. Word has length 230 [2021-05-06 04:13:08,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:13:08,076 INFO L480 AbstractCegarLoop]: Abstraction has 236 states and 261 transitions. [2021-05-06 04:13:08,076 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 6.407407407407407) internal successors, (173), 26 states have internal predecessors, (173), 26 states have call successors, (28), 26 states have call predecessors, (28), 24 states have return successors, (26), 24 states have call predecessors, (26), 25 states have call successors, (26) [2021-05-06 04:13:08,076 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 261 transitions. [2021-05-06 04:13:08,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-05-06 04:13:08,077 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:13:08,077 INFO L523 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 24, 24, 24, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 04:13:08,301 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-05-06 04:13:08,301 INFO L428 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:13:08,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:13:08,301 INFO L82 PathProgramCache]: Analyzing trace with hash -1738171370, now seen corresponding path program 24 times [2021-05-06 04:13:08,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:13:08,301 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139998122] [2021-05-06 04:13:08,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:13:08,308 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 04:13:08,308 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1556609995] [2021-05-06 04:13:08,308 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 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:13:08,452 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2021-05-06 04:13:08,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 04:13:08,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 679 conjuncts, 53 conjunts are in the unsatisfiable core [2021-05-06 04:13:08,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 04:13:08,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:08,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:09,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:09,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:09,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2584 backedges. 48 proven. 2532 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 04:13:09,032 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:13:09,032 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139998122] [2021-05-06 04:13:09,032 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 04:13:09,032 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556609995] [2021-05-06 04:13:09,032 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556609995] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 04:13:09,032 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 04:13:09,032 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2021-05-06 04:13:09,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909169793] [2021-05-06 04:13:09,032 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-06 04:13:09,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:13:09,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-06 04:13:09,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2021-05-06 04:13:09,033 INFO L87 Difference]: Start difference. First operand 236 states and 261 transitions. Second operand has 28 states, 28 states have (on average 6.428571428571429) internal successors, (180), 27 states have internal predecessors, (180), 27 states have call successors, (29), 27 states have call predecessors, (29), 25 states have return successors, (27), 25 states have call predecessors, (27), 26 states have call successors, (27) [2021-05-06 04:13:09,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:13:09,485 INFO L93 Difference]: Finished difference Result 250 states and 276 transitions. [2021-05-06 04:13:09,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-05-06 04:13:09,485 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.428571428571429) internal successors, (180), 27 states have internal predecessors, (180), 27 states have call successors, (29), 27 states have call predecessors, (29), 25 states have return successors, (27), 25 states have call predecessors, (27), 26 states have call successors, (27) Word has length 239 [2021-05-06 04:13:09,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:13:09,487 INFO L225 Difference]: With dead ends: 250 [2021-05-06 04:13:09,487 INFO L226 Difference]: Without dead ends: 245 [2021-05-06 04:13:09,487 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 552.2ms TimeCoverageRelationStatistics Valid=1001, Invalid=1651, Unknown=0, NotChecked=0, Total=2652 [2021-05-06 04:13:09,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-05-06 04:13:09,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2021-05-06 04:13:09,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 187 states have (on average 1.13903743315508) internal successors, (213), 187 states have internal predecessors, (213), 30 states have call successors, (30), 29 states have call predecessors, (30), 27 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-05-06 04:13:09,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 271 transitions. [2021-05-06 04:13:09,498 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 271 transitions. Word has length 239 [2021-05-06 04:13:09,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:13:09,498 INFO L480 AbstractCegarLoop]: Abstraction has 245 states and 271 transitions. [2021-05-06 04:13:09,499 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 6.428571428571429) internal successors, (180), 27 states have internal predecessors, (180), 27 states have call successors, (29), 27 states have call predecessors, (29), 25 states have return successors, (27), 25 states have call predecessors, (27), 26 states have call successors, (27) [2021-05-06 04:13:09,499 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 271 transitions. [2021-05-06 04:13:09,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2021-05-06 04:13:09,500 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:13:09,500 INFO L523 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 25, 25, 25, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 04:13:09,724 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-05-06 04:13:09,724 INFO L428 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:13:09,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:13:09,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1530108956, now seen corresponding path program 25 times [2021-05-06 04:13:09,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:13:09,725 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287964336] [2021-05-06 04:13:09,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:13:09,731 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 04:13:09,731 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1020534073] [2021-05-06 04:13:09,732 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:13:09,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 04:13:09,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 55 conjunts are in the unsatisfiable core [2021-05-06 04:13:09,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 04:13:09,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:09,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:09,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:09,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:09,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:09,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:09,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:09,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:09,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:09,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:09,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:09,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:09,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:09,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:09,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:09,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:09,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:09,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:09,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:09,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:09,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:09,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:09,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:09,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:10,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:10,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:10,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:10,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:10,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:10,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:10,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:10,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:10,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:10,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:10,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:10,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:10,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:10,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:10,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:10,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:10,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:10,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:10,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:10,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:10,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:10,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:10,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:10,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:10,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:10,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:10,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:10,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:10,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:10,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:10,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:10,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:10,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:10,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:10,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:10,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:10,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:10,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:10,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:10,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:10,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:10,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:10,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:10,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:10,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:10,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:10,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:10,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:10,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:10,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:10,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:10,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:10,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:10,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:10,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:10,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:10,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2804 backedges. 50 proven. 2750 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 04:13:10,457 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:13:10,457 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287964336] [2021-05-06 04:13:10,457 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 04:13:10,457 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020534073] [2021-05-06 04:13:10,457 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020534073] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 04:13:10,458 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 04:13:10,458 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2021-05-06 04:13:10,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114281244] [2021-05-06 04:13:10,458 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-05-06 04:13:10,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:13:10,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-05-06 04:13:10,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2021-05-06 04:13:10,459 INFO L87 Difference]: Start difference. First operand 245 states and 271 transitions. Second operand has 29 states, 29 states have (on average 6.448275862068965) internal successors, (187), 28 states have internal predecessors, (187), 28 states have call successors, (30), 28 states have call predecessors, (30), 26 states have return successors, (28), 26 states have call predecessors, (28), 27 states have call successors, (28) [2021-05-06 04:13:11,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:13:11,036 INFO L93 Difference]: Finished difference Result 259 states and 286 transitions. [2021-05-06 04:13:11,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-05-06 04:13:11,037 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 6.448275862068965) internal successors, (187), 28 states have internal predecessors, (187), 28 states have call successors, (30), 28 states have call predecessors, (30), 26 states have return successors, (28), 26 states have call predecessors, (28), 27 states have call successors, (28) Word has length 248 [2021-05-06 04:13:11,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:13:11,040 INFO L225 Difference]: With dead ends: 259 [2021-05-06 04:13:11,040 INFO L226 Difference]: Without dead ends: 254 [2021-05-06 04:13:11,041 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 664.0ms TimeCoverageRelationStatistics Valid=1080, Invalid=1782, Unknown=0, NotChecked=0, Total=2862 [2021-05-06 04:13:11,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-05-06 04:13:11,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2021-05-06 04:13:11,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 194 states have (on average 1.1391752577319587) internal successors, (221), 194 states have internal predecessors, (221), 31 states have call successors, (31), 30 states have call predecessors, (31), 28 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2021-05-06 04:13:11,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 281 transitions. [2021-05-06 04:13:11,052 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 281 transitions. Word has length 248 [2021-05-06 04:13:11,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:13:11,052 INFO L480 AbstractCegarLoop]: Abstraction has 254 states and 281 transitions. [2021-05-06 04:13:11,052 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 6.448275862068965) internal successors, (187), 28 states have internal predecessors, (187), 28 states have call successors, (30), 28 states have call predecessors, (30), 26 states have return successors, (28), 26 states have call predecessors, (28), 27 states have call successors, (28) [2021-05-06 04:13:11,052 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 281 transitions. [2021-05-06 04:13:11,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-05-06 04:13:11,053 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:13:11,053 INFO L523 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 26, 26, 26, 26, 26, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 04:13:11,268 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-05-06 04:13:11,268 INFO L428 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:13:11,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:13:11,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1713487146, now seen corresponding path program 26 times [2021-05-06 04:13:11,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:13:11,269 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969442562] [2021-05-06 04:13:11,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:13:11,276 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 04:13:11,276 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1635351242] [2021-05-06 04:13:11,276 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 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:13:11,407 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 04:13:11,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 04:13:11,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 57 conjunts are in the unsatisfiable core [2021-05-06 04:13:11,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 04:13:11,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:11,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:12,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:12,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:12,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:12,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:12,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:12,053 INFO L134 CoverageAnalysis]: Checked inductivity of 3033 backedges. 52 proven. 2977 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 04:13:12,053 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:13:12,053 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969442562] [2021-05-06 04:13:12,053 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 04:13:12,053 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635351242] [2021-05-06 04:13:12,053 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635351242] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 04:13:12,053 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 04:13:12,053 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2021-05-06 04:13:12,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384979210] [2021-05-06 04:13:12,054 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-05-06 04:13:12,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:13:12,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-05-06 04:13:12,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2021-05-06 04:13:12,054 INFO L87 Difference]: Start difference. First operand 254 states and 281 transitions. Second operand has 30 states, 30 states have (on average 6.466666666666667) internal successors, (194), 29 states have internal predecessors, (194), 29 states have call successors, (31), 29 states have call predecessors, (31), 27 states have return successors, (29), 27 states have call predecessors, (29), 28 states have call successors, (29) [2021-05-06 04:13:12,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:13:12,601 INFO L93 Difference]: Finished difference Result 268 states and 296 transitions. [2021-05-06 04:13:12,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-05-06 04:13:12,602 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 6.466666666666667) internal successors, (194), 29 states have internal predecessors, (194), 29 states have call successors, (31), 29 states have call predecessors, (31), 27 states have return successors, (29), 27 states have call predecessors, (29), 28 states have call successors, (29) Word has length 257 [2021-05-06 04:13:12,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:13:12,603 INFO L225 Difference]: With dead ends: 268 [2021-05-06 04:13:12,603 INFO L226 Difference]: Without dead ends: 263 [2021-05-06 04:13:12,605 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 652.4ms TimeCoverageRelationStatistics Valid=1162, Invalid=1918, Unknown=0, NotChecked=0, Total=3080 [2021-05-06 04:13:12,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-05-06 04:13:12,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2021-05-06 04:13:12,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 201 states have (on average 1.1393034825870647) internal successors, (229), 201 states have internal predecessors, (229), 32 states have call successors, (32), 31 states have call predecessors, (32), 29 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-05-06 04:13:12,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 291 transitions. [2021-05-06 04:13:12,617 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 291 transitions. Word has length 257 [2021-05-06 04:13:12,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:13:12,618 INFO L480 AbstractCegarLoop]: Abstraction has 263 states and 291 transitions. [2021-05-06 04:13:12,618 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 6.466666666666667) internal successors, (194), 29 states have internal predecessors, (194), 29 states have call successors, (31), 29 states have call predecessors, (31), 27 states have return successors, (29), 27 states have call predecessors, (29), 28 states have call successors, (29) [2021-05-06 04:13:12,618 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 291 transitions. [2021-05-06 04:13:12,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2021-05-06 04:13:12,619 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:13:12,619 INFO L523 BasicCegarLoop]: trace histogram [28, 28, 27, 27, 27, 27, 27, 27, 27, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 04:13:12,843 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:13:12,843 INFO L428 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:13:12,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:13:12,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1462406492, now seen corresponding path program 27 times [2021-05-06 04:13:12,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:13:12,844 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243824859] [2021-05-06 04:13:12,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:13:12,849 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 04:13:12,849 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [934730390] [2021-05-06 04:13:12,850 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 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:13:13,023 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2021-05-06 04:13:13,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 04:13:13,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 748 conjuncts, 59 conjunts are in the unsatisfiable core [2021-05-06 04:13:13,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 04:13:13,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:13,751 INFO L134 CoverageAnalysis]: Checked inductivity of 3271 backedges. 54 proven. 3213 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 04:13:13,752 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:13:13,752 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243824859] [2021-05-06 04:13:13,752 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 04:13:13,752 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934730390] [2021-05-06 04:13:13,752 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934730390] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 04:13:13,752 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 04:13:13,752 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2021-05-06 04:13:13,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588139506] [2021-05-06 04:13:13,752 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-05-06 04:13:13,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:13:13,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-05-06 04:13:13,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2021-05-06 04:13:13,753 INFO L87 Difference]: Start difference. First operand 263 states and 291 transitions. Second operand has 31 states, 31 states have (on average 6.483870967741935) internal successors, (201), 30 states have internal predecessors, (201), 30 states have call successors, (32), 30 states have call predecessors, (32), 28 states have return successors, (30), 28 states have call predecessors, (30), 29 states have call successors, (30) [2021-05-06 04:13:14,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:13:14,301 INFO L93 Difference]: Finished difference Result 277 states and 306 transitions. [2021-05-06 04:13:14,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-05-06 04:13:14,301 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 6.483870967741935) internal successors, (201), 30 states have internal predecessors, (201), 30 states have call successors, (32), 30 states have call predecessors, (32), 28 states have return successors, (30), 28 states have call predecessors, (30), 29 states have call successors, (30) Word has length 266 [2021-05-06 04:13:14,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:13:14,303 INFO L225 Difference]: With dead ends: 277 [2021-05-06 04:13:14,303 INFO L226 Difference]: Without dead ends: 272 [2021-05-06 04:13:14,304 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 708.3ms TimeCoverageRelationStatistics Valid=1247, Invalid=2059, Unknown=0, NotChecked=0, Total=3306 [2021-05-06 04:13:14,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-05-06 04:13:14,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2021-05-06 04:13:14,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 208 states have (on average 1.1394230769230769) internal successors, (237), 208 states have internal predecessors, (237), 33 states have call successors, (33), 32 states have call predecessors, (33), 30 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2021-05-06 04:13:14,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 301 transitions. [2021-05-06 04:13:14,314 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 301 transitions. Word has length 266 [2021-05-06 04:13:14,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:13:14,314 INFO L480 AbstractCegarLoop]: Abstraction has 272 states and 301 transitions. [2021-05-06 04:13:14,315 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 6.483870967741935) internal successors, (201), 30 states have internal predecessors, (201), 30 states have call successors, (32), 30 states have call predecessors, (32), 28 states have return successors, (30), 28 states have call predecessors, (30), 29 states have call successors, (30) [2021-05-06 04:13:14,315 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 301 transitions. [2021-05-06 04:13:14,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2021-05-06 04:13:14,316 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:13:14,316 INFO L523 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 28, 28, 28, 28, 28, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 04:13:14,528 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:13:14,529 INFO L428 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:13:14,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:13:14,529 INFO L82 PathProgramCache]: Analyzing trace with hash -394085994, now seen corresponding path program 28 times [2021-05-06 04:13:14,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:13:14,529 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434330186] [2021-05-06 04:13:14,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:13:14,534 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 04:13:14,535 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [941789075] [2021-05-06 04:13:14,535 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 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:13:14,666 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 04:13:14,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 04:13:14,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 771 conjuncts, 61 conjunts are in the unsatisfiable core [2021-05-06 04:13:14,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 04:13:14,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:14,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:14,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:14,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:14,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:14,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:14,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:14,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:14,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:14,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:14,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:14,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:14,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:14,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:14,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:14,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:14,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:14,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:14,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:14,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:14,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:14,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:14,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:14,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:14,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:14,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:14,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:14,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:14,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:14,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:14,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:14,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:14,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:14,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:14,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:14,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:14,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:14,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:14,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:14,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:14,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:14,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:14,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:14,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:14,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:14,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:14,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:14,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:14,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:14,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:14,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:15,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:15,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:15,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:15,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:15,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:15,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:15,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:15,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:15,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:15,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:15,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:15,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:15,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:15,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:15,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:15,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:15,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:15,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:15,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:15,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:15,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:15,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:15,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:15,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:15,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:15,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:15,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:15,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:15,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:15,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:15,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:15,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:15,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:15,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:15,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:15,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:15,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:15,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:15,390 INFO L134 CoverageAnalysis]: Checked inductivity of 3518 backedges. 56 proven. 3458 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 04:13:15,390 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:13:15,390 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434330186] [2021-05-06 04:13:15,390 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 04:13:15,390 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941789075] [2021-05-06 04:13:15,390 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941789075] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 04:13:15,390 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 04:13:15,390 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2021-05-06 04:13:15,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532370182] [2021-05-06 04:13:15,391 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-05-06 04:13:15,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:13:15,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-05-06 04:13:15,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2021-05-06 04:13:15,392 INFO L87 Difference]: Start difference. First operand 272 states and 301 transitions. Second operand has 32 states, 32 states have (on average 6.5) internal successors, (208), 31 states have internal predecessors, (208), 31 states have call successors, (33), 31 states have call predecessors, (33), 29 states have return successors, (31), 29 states have call predecessors, (31), 30 states have call successors, (31) [2021-05-06 04:13:15,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:13:15,997 INFO L93 Difference]: Finished difference Result 286 states and 316 transitions. [2021-05-06 04:13:15,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-05-06 04:13:15,998 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 6.5) internal successors, (208), 31 states have internal predecessors, (208), 31 states have call successors, (33), 31 states have call predecessors, (33), 29 states have return successors, (31), 29 states have call predecessors, (31), 30 states have call successors, (31) Word has length 275 [2021-05-06 04:13:15,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:13:15,999 INFO L225 Difference]: With dead ends: 286 [2021-05-06 04:13:15,999 INFO L226 Difference]: Without dead ends: 281 [2021-05-06 04:13:16,000 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 738.5ms TimeCoverageRelationStatistics Valid=1335, Invalid=2205, Unknown=0, NotChecked=0, Total=3540 [2021-05-06 04:13:16,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2021-05-06 04:13:16,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2021-05-06 04:13:16,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 215 states have (on average 1.1395348837209303) internal successors, (245), 215 states have internal predecessors, (245), 34 states have call successors, (34), 33 states have call predecessors, (34), 31 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2021-05-06 04:13:16,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 311 transitions. [2021-05-06 04:13:16,011 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 311 transitions. Word has length 275 [2021-05-06 04:13:16,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:13:16,011 INFO L480 AbstractCegarLoop]: Abstraction has 281 states and 311 transitions. [2021-05-06 04:13:16,011 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 6.5) internal successors, (208), 31 states have internal predecessors, (208), 31 states have call successors, (33), 31 states have call predecessors, (33), 29 states have return successors, (31), 29 states have call predecessors, (31), 30 states have call successors, (31) [2021-05-06 04:13:16,011 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 311 transitions. [2021-05-06 04:13:16,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-05-06 04:13:16,013 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:13:16,013 INFO L523 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 29, 29, 29, 29, 29, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 04:13:16,233 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:13:16,233 INFO L428 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:13:16,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:13:16,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1379905180, now seen corresponding path program 29 times [2021-05-06 04:13:16,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:13:16,234 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685311097] [2021-05-06 04:13:16,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:13:16,238 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 04:13:16,238 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [456828198] [2021-05-06 04:13:16,238 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 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:13:16,479 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2021-05-06 04:13:16,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 04:13:16,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 794 conjuncts, 63 conjunts are in the unsatisfiable core [2021-05-06 04:13:16,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 04:13:16,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:16,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:17,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:17,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:17,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:17,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:17,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:17,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:17,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:17,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:17,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:17,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:17,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:17,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:17,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:17,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:17,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:17,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:17,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:17,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:17,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:17,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:17,217 INFO L134 CoverageAnalysis]: Checked inductivity of 3774 backedges. 58 proven. 3712 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 04:13:17,217 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:13:17,217 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685311097] [2021-05-06 04:13:17,217 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 04:13:17,217 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456828198] [2021-05-06 04:13:17,217 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456828198] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 04:13:17,217 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 04:13:17,217 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2021-05-06 04:13:17,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68770353] [2021-05-06 04:13:17,218 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-05-06 04:13:17,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:13:17,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-05-06 04:13:17,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2021-05-06 04:13:17,218 INFO L87 Difference]: Start difference. First operand 281 states and 311 transitions. Second operand has 33 states, 33 states have (on average 6.515151515151516) internal successors, (215), 32 states have internal predecessors, (215), 32 states have call successors, (34), 32 states have call predecessors, (34), 30 states have return successors, (32), 30 states have call predecessors, (32), 31 states have call successors, (32) [2021-05-06 04:13:17,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:13:17,814 INFO L93 Difference]: Finished difference Result 295 states and 326 transitions. [2021-05-06 04:13:17,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-05-06 04:13:17,815 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 6.515151515151516) internal successors, (215), 32 states have internal predecessors, (215), 32 states have call successors, (34), 32 states have call predecessors, (34), 30 states have return successors, (32), 30 states have call predecessors, (32), 31 states have call successors, (32) Word has length 284 [2021-05-06 04:13:17,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:13:17,816 INFO L225 Difference]: With dead ends: 295 [2021-05-06 04:13:17,816 INFO L226 Difference]: Without dead ends: 290 [2021-05-06 04:13:17,817 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 779.3ms TimeCoverageRelationStatistics Valid=1426, Invalid=2356, Unknown=0, NotChecked=0, Total=3782 [2021-05-06 04:13:17,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-05-06 04:13:17,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2021-05-06 04:13:17,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 222 states have (on average 1.1396396396396395) internal successors, (253), 222 states have internal predecessors, (253), 35 states have call successors, (35), 34 states have call predecessors, (35), 32 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2021-05-06 04:13:17,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 321 transitions. [2021-05-06 04:13:17,827 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 321 transitions. Word has length 284 [2021-05-06 04:13:17,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:13:17,828 INFO L480 AbstractCegarLoop]: Abstraction has 290 states and 321 transitions. [2021-05-06 04:13:17,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 6.515151515151516) internal successors, (215), 32 states have internal predecessors, (215), 32 states have call successors, (34), 32 states have call predecessors, (34), 30 states have return successors, (32), 30 states have call predecessors, (32), 31 states have call successors, (32) [2021-05-06 04:13:17,828 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 321 transitions. [2021-05-06 04:13:17,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2021-05-06 04:13:17,829 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:13:17,829 INFO L523 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 30, 30, 30, 30, 30, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 04:13:18,035 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-05-06 04:13:18,036 INFO L428 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:13:18,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:13:18,036 INFO L82 PathProgramCache]: Analyzing trace with hash 520028246, now seen corresponding path program 30 times [2021-05-06 04:13:18,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:13:18,036 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632127191] [2021-05-06 04:13:18,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:13:18,042 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 04:13:18,043 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2009863999] [2021-05-06 04:13:18,043 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 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:13:18,236 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2021-05-06 04:13:18,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 04:13:18,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 817 conjuncts, 65 conjunts are in the unsatisfiable core [2021-05-06 04:13:18,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 04:13:18,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:18,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:19,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:19,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:19,023 INFO L134 CoverageAnalysis]: Checked inductivity of 4039 backedges. 60 proven. 3975 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 04:13:19,023 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:13:19,023 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632127191] [2021-05-06 04:13:19,023 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 04:13:19,023 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009863999] [2021-05-06 04:13:19,023 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009863999] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 04:13:19,023 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 04:13:19,023 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2021-05-06 04:13:19,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447723399] [2021-05-06 04:13:19,024 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-05-06 04:13:19,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:13:19,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-05-06 04:13:19,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2021-05-06 04:13:19,025 INFO L87 Difference]: Start difference. First operand 290 states and 321 transitions. Second operand has 34 states, 34 states have (on average 6.529411764705882) internal successors, (222), 33 states have internal predecessors, (222), 33 states have call successors, (35), 33 states have call predecessors, (35), 31 states have return successors, (33), 31 states have call predecessors, (33), 32 states have call successors, (33) [2021-05-06 04:13:19,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:13:19,659 INFO L93 Difference]: Finished difference Result 304 states and 336 transitions. [2021-05-06 04:13:19,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-05-06 04:13:19,660 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 6.529411764705882) internal successors, (222), 33 states have internal predecessors, (222), 33 states have call successors, (35), 33 states have call predecessors, (35), 31 states have return successors, (33), 31 states have call predecessors, (33), 32 states have call successors, (33) Word has length 293 [2021-05-06 04:13:19,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:13:19,661 INFO L225 Difference]: With dead ends: 304 [2021-05-06 04:13:19,661 INFO L226 Difference]: Without dead ends: 299 [2021-05-06 04:13:19,662 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 835.0ms TimeCoverageRelationStatistics Valid=1520, Invalid=2512, Unknown=0, NotChecked=0, Total=4032 [2021-05-06 04:13:19,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2021-05-06 04:13:19,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2021-05-06 04:13:19,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 229 states have (on average 1.1397379912663756) internal successors, (261), 229 states have internal predecessors, (261), 36 states have call successors, (36), 35 states have call predecessors, (36), 33 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2021-05-06 04:13:19,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 331 transitions. [2021-05-06 04:13:19,673 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 331 transitions. Word has length 293 [2021-05-06 04:13:19,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:13:19,673 INFO L480 AbstractCegarLoop]: Abstraction has 299 states and 331 transitions. [2021-05-06 04:13:19,673 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 6.529411764705882) internal successors, (222), 33 states have internal predecessors, (222), 33 states have call successors, (35), 33 states have call predecessors, (35), 31 states have return successors, (33), 31 states have call predecessors, (33), 32 states have call successors, (33) [2021-05-06 04:13:19,673 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 331 transitions. [2021-05-06 04:13:19,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2021-05-06 04:13:19,675 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:13:19,675 INFO L523 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 31, 31, 31, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 04:13:19,888 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:13:19,889 INFO L428 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:13:19,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:13:19,889 INFO L82 PathProgramCache]: Analyzing trace with hash -213450788, now seen corresponding path program 31 times [2021-05-06 04:13:19,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:13:19,889 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833635449] [2021-05-06 04:13:19,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:13:19,895 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 04:13:19,895 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [403341351] [2021-05-06 04:13:19,895 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:13:20,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 04:13:20,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 67 conjunts are in the unsatisfiable core [2021-05-06 04:13:20,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 04:13:20,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:20,925 INFO L134 CoverageAnalysis]: Checked inductivity of 4313 backedges. 62 proven. 4247 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 04:13:20,926 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:13:20,926 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833635449] [2021-05-06 04:13:20,926 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 04:13:20,926 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403341351] [2021-05-06 04:13:20,926 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403341351] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 04:13:20,926 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 04:13:20,926 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2021-05-06 04:13:20,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452560097] [2021-05-06 04:13:20,926 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-05-06 04:13:20,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:13:20,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-05-06 04:13:20,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2021-05-06 04:13:20,927 INFO L87 Difference]: Start difference. First operand 299 states and 331 transitions. Second operand has 35 states, 35 states have (on average 6.542857142857143) internal successors, (229), 34 states have internal predecessors, (229), 34 states have call successors, (36), 34 states have call predecessors, (36), 32 states have return successors, (34), 32 states have call predecessors, (34), 33 states have call successors, (34) [2021-05-06 04:13:21,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:13:21,573 INFO L93 Difference]: Finished difference Result 313 states and 346 transitions. [2021-05-06 04:13:21,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-05-06 04:13:21,573 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 6.542857142857143) internal successors, (229), 34 states have internal predecessors, (229), 34 states have call successors, (36), 34 states have call predecessors, (36), 32 states have return successors, (34), 32 states have call predecessors, (34), 33 states have call successors, (34) Word has length 302 [2021-05-06 04:13:21,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:13:21,574 INFO L225 Difference]: With dead ends: 313 [2021-05-06 04:13:21,574 INFO L226 Difference]: Without dead ends: 308 [2021-05-06 04:13:21,575 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 889.4ms TimeCoverageRelationStatistics Valid=1617, Invalid=2673, Unknown=0, NotChecked=0, Total=4290 [2021-05-06 04:13:21,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-05-06 04:13:21,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2021-05-06 04:13:21,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 236 states have (on average 1.1398305084745763) internal successors, (269), 236 states have internal predecessors, (269), 37 states have call successors, (37), 36 states have call predecessors, (37), 34 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2021-05-06 04:13:21,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 341 transitions. [2021-05-06 04:13:21,586 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 341 transitions. Word has length 302 [2021-05-06 04:13:21,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:13:21,587 INFO L480 AbstractCegarLoop]: Abstraction has 308 states and 341 transitions. [2021-05-06 04:13:21,587 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 6.542857142857143) internal successors, (229), 34 states have internal predecessors, (229), 34 states have call successors, (36), 34 states have call predecessors, (36), 32 states have return successors, (34), 32 states have call predecessors, (34), 33 states have call successors, (34) [2021-05-06 04:13:21,587 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 341 transitions. [2021-05-06 04:13:21,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2021-05-06 04:13:21,588 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:13:21,589 INFO L523 BasicCegarLoop]: trace histogram [33, 33, 32, 32, 32, 32, 32, 32, 32, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 04:13:21,812 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-05-06 04:13:21,813 INFO L428 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:13:21,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:13:21,813 INFO L82 PathProgramCache]: Analyzing trace with hash 83826454, now seen corresponding path program 32 times [2021-05-06 04:13:21,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:13:21,813 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274731723] [2021-05-06 04:13:21,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:13:21,818 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 04:13:21,819 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2103003549] [2021-05-06 04:13:21,819 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 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:13:21,955 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 04:13:21,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 04:13:21,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 863 conjuncts, 69 conjunts are in the unsatisfiable core [2021-05-06 04:13:21,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 04:13:21,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:21,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:21,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:21,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:21,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:21,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:22,864 INFO L134 CoverageAnalysis]: Checked inductivity of 4596 backedges. 64 proven. 4528 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 04:13:22,864 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:13:22,864 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274731723] [2021-05-06 04:13:22,864 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 04:13:22,864 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103003549] [2021-05-06 04:13:22,864 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103003549] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 04:13:22,864 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 04:13:22,864 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2021-05-06 04:13:22,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581453620] [2021-05-06 04:13:22,864 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-05-06 04:13:22,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:13:22,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-05-06 04:13:22,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2021-05-06 04:13:22,865 INFO L87 Difference]: Start difference. First operand 308 states and 341 transitions. Second operand has 36 states, 36 states have (on average 6.555555555555555) internal successors, (236), 35 states have internal predecessors, (236), 35 states have call successors, (37), 35 states have call predecessors, (37), 33 states have return successors, (35), 33 states have call predecessors, (35), 34 states have call successors, (35) [2021-05-06 04:13:23,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:13:23,624 INFO L93 Difference]: Finished difference Result 322 states and 356 transitions. [2021-05-06 04:13:23,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-05-06 04:13:23,625 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 6.555555555555555) internal successors, (236), 35 states have internal predecessors, (236), 35 states have call successors, (37), 35 states have call predecessors, (37), 33 states have return successors, (35), 33 states have call predecessors, (35), 34 states have call successors, (35) Word has length 311 [2021-05-06 04:13:23,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:13:23,626 INFO L225 Difference]: With dead ends: 322 [2021-05-06 04:13:23,626 INFO L226 Difference]: Without dead ends: 317 [2021-05-06 04:13:23,627 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 968.6ms TimeCoverageRelationStatistics Valid=1717, Invalid=2839, Unknown=0, NotChecked=0, Total=4556 [2021-05-06 04:13:23,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2021-05-06 04:13:23,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 317. [2021-05-06 04:13:23,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 243 states have (on average 1.139917695473251) internal successors, (277), 243 states have internal predecessors, (277), 38 states have call successors, (38), 37 states have call predecessors, (38), 35 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2021-05-06 04:13:23,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 351 transitions. [2021-05-06 04:13:23,637 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 351 transitions. Word has length 311 [2021-05-06 04:13:23,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:13:23,637 INFO L480 AbstractCegarLoop]: Abstraction has 317 states and 351 transitions. [2021-05-06 04:13:23,638 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 6.555555555555555) internal successors, (236), 35 states have internal predecessors, (236), 35 states have call successors, (37), 35 states have call predecessors, (37), 33 states have return successors, (35), 33 states have call predecessors, (35), 34 states have call successors, (35) [2021-05-06 04:13:23,638 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 351 transitions. [2021-05-06 04:13:23,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2021-05-06 04:13:23,639 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:13:23,639 INFO L523 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 33, 33, 33, 33, 33, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 04:13:23,844 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:13:23,845 INFO L428 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:13:23,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:13:23,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1410629916, now seen corresponding path program 33 times [2021-05-06 04:13:23,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:13:23,845 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222167894] [2021-05-06 04:13:23,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:13:23,854 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 04:13:23,854 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [616708203] [2021-05-06 04:13:23,854 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 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:13:24,053 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2021-05-06 04:13:24,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 04:13:24,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 886 conjuncts, 71 conjunts are in the unsatisfiable core [2021-05-06 04:13:24,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 04:13:24,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:24,937 INFO L134 CoverageAnalysis]: Checked inductivity of 4888 backedges. 66 proven. 4818 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 04:13:24,937 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:13:24,937 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222167894] [2021-05-06 04:13:24,937 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 04:13:24,937 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616708203] [2021-05-06 04:13:24,937 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616708203] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 04:13:24,937 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 04:13:24,938 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2021-05-06 04:13:24,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755624120] [2021-05-06 04:13:24,938 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-05-06 04:13:24,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:13:24,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-05-06 04:13:24,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2021-05-06 04:13:24,939 INFO L87 Difference]: Start difference. First operand 317 states and 351 transitions. Second operand has 37 states, 37 states have (on average 6.5675675675675675) internal successors, (243), 36 states have internal predecessors, (243), 36 states have call successors, (38), 36 states have call predecessors, (38), 34 states have return successors, (36), 34 states have call predecessors, (36), 35 states have call successors, (36) [2021-05-06 04:13:25,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:13:25,674 INFO L93 Difference]: Finished difference Result 331 states and 366 transitions. [2021-05-06 04:13:25,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-05-06 04:13:25,674 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 6.5675675675675675) internal successors, (243), 36 states have internal predecessors, (243), 36 states have call successors, (38), 36 states have call predecessors, (38), 34 states have return successors, (36), 34 states have call predecessors, (36), 35 states have call successors, (36) Word has length 320 [2021-05-06 04:13:25,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:13:25,675 INFO L225 Difference]: With dead ends: 331 [2021-05-06 04:13:25,675 INFO L226 Difference]: Without dead ends: 326 [2021-05-06 04:13:25,676 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 965.3ms TimeCoverageRelationStatistics Valid=1820, Invalid=3010, Unknown=0, NotChecked=0, Total=4830 [2021-05-06 04:13:25,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-05-06 04:13:25,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2021-05-06 04:13:25,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 250 states have (on average 1.14) internal successors, (285), 250 states have internal predecessors, (285), 39 states have call successors, (39), 38 states have call predecessors, (39), 36 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2021-05-06 04:13:25,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 361 transitions. [2021-05-06 04:13:25,686 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 361 transitions. Word has length 320 [2021-05-06 04:13:25,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:13:25,687 INFO L480 AbstractCegarLoop]: Abstraction has 326 states and 361 transitions. [2021-05-06 04:13:25,687 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 6.5675675675675675) internal successors, (243), 36 states have internal predecessors, (243), 36 states have call successors, (38), 36 states have call predecessors, (38), 34 states have return successors, (36), 34 states have call predecessors, (36), 35 states have call successors, (36) [2021-05-06 04:13:25,687 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 361 transitions. [2021-05-06 04:13:25,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2021-05-06 04:13:25,688 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:13:25,689 INFO L523 BasicCegarLoop]: trace histogram [35, 35, 34, 34, 34, 34, 34, 34, 34, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 04:13:25,903 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-05-06 04:13:25,903 INFO L428 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:13:25,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:13:25,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1328479702, now seen corresponding path program 34 times [2021-05-06 04:13:25,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:13:25,904 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556502300] [2021-05-06 04:13:25,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:13:25,909 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 04:13:25,909 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1817199768] [2021-05-06 04:13:25,909 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 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:13:26,046 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 04:13:26,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 04:13:26,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 909 conjuncts, 73 conjunts are in the unsatisfiable core [2021-05-06 04:13:26,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 04:13:26,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:26,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:27,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:27,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:27,049 INFO L134 CoverageAnalysis]: Checked inductivity of 5189 backedges. 68 proven. 5117 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 04:13:27,049 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:13:27,049 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556502300] [2021-05-06 04:13:27,049 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 04:13:27,049 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817199768] [2021-05-06 04:13:27,050 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817199768] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 04:13:27,050 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 04:13:27,050 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2021-05-06 04:13:27,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439469489] [2021-05-06 04:13:27,050 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-05-06 04:13:27,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:13:27,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-05-06 04:13:27,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2021-05-06 04:13:27,051 INFO L87 Difference]: Start difference. First operand 326 states and 361 transitions. Second operand has 38 states, 38 states have (on average 6.578947368421052) internal successors, (250), 37 states have internal predecessors, (250), 37 states have call successors, (39), 37 states have call predecessors, (39), 35 states have return successors, (37), 35 states have call predecessors, (37), 36 states have call successors, (37) [2021-05-06 04:13:27,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:13:27,812 INFO L93 Difference]: Finished difference Result 340 states and 376 transitions. [2021-05-06 04:13:27,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-05-06 04:13:27,813 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 6.578947368421052) internal successors, (250), 37 states have internal predecessors, (250), 37 states have call successors, (39), 37 states have call predecessors, (39), 35 states have return successors, (37), 35 states have call predecessors, (37), 36 states have call successors, (37) Word has length 329 [2021-05-06 04:13:27,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:13:27,814 INFO L225 Difference]: With dead ends: 340 [2021-05-06 04:13:27,814 INFO L226 Difference]: Without dead ends: 335 [2021-05-06 04:13:27,815 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 1052.4ms TimeCoverageRelationStatistics Valid=1926, Invalid=3186, Unknown=0, NotChecked=0, Total=5112 [2021-05-06 04:13:27,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2021-05-06 04:13:27,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 335. [2021-05-06 04:13:27,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 257 states have (on average 1.140077821011673) internal successors, (293), 257 states have internal predecessors, (293), 40 states have call successors, (40), 39 states have call predecessors, (40), 37 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-05-06 04:13:27,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 371 transitions. [2021-05-06 04:13:27,832 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 371 transitions. Word has length 329 [2021-05-06 04:13:27,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:13:27,832 INFO L480 AbstractCegarLoop]: Abstraction has 335 states and 371 transitions. [2021-05-06 04:13:27,832 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 6.578947368421052) internal successors, (250), 37 states have internal predecessors, (250), 37 states have call successors, (39), 37 states have call predecessors, (39), 35 states have return successors, (37), 35 states have call predecessors, (37), 36 states have call successors, (37) [2021-05-06 04:13:27,832 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 371 transitions. [2021-05-06 04:13:27,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2021-05-06 04:13:27,834 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:13:27,834 INFO L523 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 35, 35, 35, 35, 35, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 04:13:28,059 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-05-06 04:13:28,059 INFO L428 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:13:28,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:13:28,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1098658396, now seen corresponding path program 35 times [2021-05-06 04:13:28,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:13:28,060 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772543080] [2021-05-06 04:13:28,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:13:28,069 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 04:13:28,069 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [584822912] [2021-05-06 04:13:28,069 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 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:13:28,318 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2021-05-06 04:13:28,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 04:13:28,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 932 conjuncts, 75 conjunts are in the unsatisfiable core [2021-05-06 04:13:28,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 04:13:28,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:28,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:29,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:29,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:29,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:29,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:29,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:29,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:29,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:29,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:29,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:29,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:29,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:29,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:29,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:29,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:29,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:29,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:29,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:29,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:29,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:29,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:29,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:29,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:29,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:29,278 INFO L134 CoverageAnalysis]: Checked inductivity of 5499 backedges. 70 proven. 5425 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 04:13:29,278 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:13:29,278 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772543080] [2021-05-06 04:13:29,278 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 04:13:29,278 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584822912] [2021-05-06 04:13:29,278 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584822912] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 04:13:29,279 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 04:13:29,279 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2021-05-06 04:13:29,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703688821] [2021-05-06 04:13:29,279 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-05-06 04:13:29,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:13:29,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-05-06 04:13:29,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2021-05-06 04:13:29,280 INFO L87 Difference]: Start difference. First operand 335 states and 371 transitions. Second operand has 39 states, 39 states have (on average 6.589743589743589) internal successors, (257), 38 states have internal predecessors, (257), 38 states have call successors, (40), 38 states have call predecessors, (40), 36 states have return successors, (38), 36 states have call predecessors, (38), 37 states have call successors, (38) [2021-05-06 04:13:30,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:13:30,049 INFO L93 Difference]: Finished difference Result 349 states and 386 transitions. [2021-05-06 04:13:30,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-05-06 04:13:30,050 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 6.589743589743589) internal successors, (257), 38 states have internal predecessors, (257), 38 states have call successors, (40), 38 states have call predecessors, (40), 36 states have return successors, (38), 36 states have call predecessors, (38), 37 states have call successors, (38) Word has length 338 [2021-05-06 04:13:30,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:13:30,051 INFO L225 Difference]: With dead ends: 349 [2021-05-06 04:13:30,051 INFO L226 Difference]: Without dead ends: 344 [2021-05-06 04:13:30,052 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 1065.0ms TimeCoverageRelationStatistics Valid=2035, Invalid=3367, Unknown=0, NotChecked=0, Total=5402 [2021-05-06 04:13:30,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-05-06 04:13:30,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2021-05-06 04:13:30,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 264 states have (on average 1.1401515151515151) internal successors, (301), 264 states have internal predecessors, (301), 41 states have call successors, (41), 40 states have call predecessors, (41), 38 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2021-05-06 04:13:30,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 381 transitions. [2021-05-06 04:13:30,063 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 381 transitions. Word has length 338 [2021-05-06 04:13:30,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:13:30,064 INFO L480 AbstractCegarLoop]: Abstraction has 344 states and 381 transitions. [2021-05-06 04:13:30,064 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 6.589743589743589) internal successors, (257), 38 states have internal predecessors, (257), 38 states have call successors, (40), 38 states have call predecessors, (40), 36 states have return successors, (38), 36 states have call predecessors, (38), 37 states have call successors, (38) [2021-05-06 04:13:30,064 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 381 transitions. [2021-05-06 04:13:30,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2021-05-06 04:13:30,066 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:13:30,066 INFO L523 BasicCegarLoop]: trace histogram [37, 37, 36, 36, 36, 36, 36, 36, 36, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 04:13:30,288 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-05-06 04:13:30,289 INFO L428 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:13:30,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:13:30,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1597682838, now seen corresponding path program 36 times [2021-05-06 04:13:30,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:13:30,289 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645864575] [2021-05-06 04:13:30,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:13:30,294 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 04:13:30,295 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [72289533] [2021-05-06 04:13:30,295 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 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:13:30,507 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2021-05-06 04:13:30,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 04:13:30,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 955 conjuncts, 77 conjunts are in the unsatisfiable core [2021-05-06 04:13:30,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 04:13:30,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:30,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:31,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:31,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:31,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:31,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:31,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:31,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:31,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:31,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:31,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:31,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:31,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:31,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:31,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:31,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:31,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:31,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:31,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:31,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:31,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:31,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:31,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:31,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:31,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:31,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:31,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:31,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:31,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:31,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:31,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:31,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:31,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:31,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:31,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:31,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:31,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:31,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:31,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:31,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:31,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:31,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:31,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:31,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:31,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:31,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:31,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:31,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:31,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:31,519 INFO L134 CoverageAnalysis]: Checked inductivity of 5818 backedges. 72 proven. 5742 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 04:13:31,519 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:13:31,519 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645864575] [2021-05-06 04:13:31,519 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 04:13:31,519 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72289533] [2021-05-06 04:13:31,519 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72289533] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 04:13:31,519 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 04:13:31,519 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2021-05-06 04:13:31,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613176539] [2021-05-06 04:13:31,519 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-05-06 04:13:31,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:13:31,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-05-06 04:13:31,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2021-05-06 04:13:31,520 INFO L87 Difference]: Start difference. First operand 344 states and 381 transitions. Second operand has 40 states, 40 states have (on average 6.6) internal successors, (264), 39 states have internal predecessors, (264), 39 states have call successors, (41), 39 states have call predecessors, (41), 37 states have return successors, (39), 37 states have call predecessors, (39), 38 states have call successors, (39) [2021-05-06 04:13:32,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:13:32,385 INFO L93 Difference]: Finished difference Result 358 states and 396 transitions. [2021-05-06 04:13:32,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-05-06 04:13:32,386 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 6.6) internal successors, (264), 39 states have internal predecessors, (264), 39 states have call successors, (41), 39 states have call predecessors, (41), 37 states have return successors, (39), 37 states have call predecessors, (39), 38 states have call successors, (39) Word has length 347 [2021-05-06 04:13:32,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:13:32,387 INFO L225 Difference]: With dead ends: 358 [2021-05-06 04:13:32,387 INFO L226 Difference]: Without dead ends: 353 [2021-05-06 04:13:32,387 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 1126.9ms TimeCoverageRelationStatistics Valid=2147, Invalid=3553, Unknown=0, NotChecked=0, Total=5700 [2021-05-06 04:13:32,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2021-05-06 04:13:32,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 353. [2021-05-06 04:13:32,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 271 states have (on average 1.1402214022140222) internal successors, (309), 271 states have internal predecessors, (309), 42 states have call successors, (42), 41 states have call predecessors, (42), 39 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2021-05-06 04:13:32,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 391 transitions. [2021-05-06 04:13:32,399 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 391 transitions. Word has length 347 [2021-05-06 04:13:32,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:13:32,399 INFO L480 AbstractCegarLoop]: Abstraction has 353 states and 391 transitions. [2021-05-06 04:13:32,399 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 6.6) internal successors, (264), 39 states have internal predecessors, (264), 39 states have call successors, (41), 39 states have call predecessors, (41), 37 states have return successors, (39), 37 states have call predecessors, (39), 38 states have call successors, (39) [2021-05-06 04:13:32,399 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 391 transitions. [2021-05-06 04:13:32,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2021-05-06 04:13:32,401 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:13:32,401 INFO L523 BasicCegarLoop]: trace histogram [38, 38, 37, 37, 37, 37, 37, 37, 37, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 04:13:32,616 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-05-06 04:13:32,617 INFO L428 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:13:32,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:13:32,617 INFO L82 PathProgramCache]: Analyzing trace with hash 2068976540, now seen corresponding path program 37 times [2021-05-06 04:13:32,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:13:32,617 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12057096] [2021-05-06 04:13:32,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:13:32,623 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 04:13:32,623 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [601435641] [2021-05-06 04:13:32,623 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:13:32,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 04:13:32,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 978 conjuncts, 79 conjunts are in the unsatisfiable core [2021-05-06 04:13:32,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 04:13:32,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:32,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:32,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:32,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:32,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:32,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:32,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:32,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:32,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:32,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:32,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:32,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:32,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:32,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:32,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:32,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:32,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:32,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:32,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:32,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:32,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:32,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:32,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:32,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:32,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:32,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:32,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:32,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:32,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:32,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:32,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:32,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:32,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:33,869 INFO L134 CoverageAnalysis]: Checked inductivity of 6146 backedges. 74 proven. 6068 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 04:13:33,870 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:13:33,870 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12057096] [2021-05-06 04:13:33,870 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 04:13:33,870 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601435641] [2021-05-06 04:13:33,870 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601435641] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 04:13:33,870 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 04:13:33,870 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2021-05-06 04:13:33,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514531559] [2021-05-06 04:13:33,870 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-05-06 04:13:33,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:13:33,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-05-06 04:13:33,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2021-05-06 04:13:33,871 INFO L87 Difference]: Start difference. First operand 353 states and 391 transitions. Second operand has 41 states, 41 states have (on average 6.609756097560975) internal successors, (271), 40 states have internal predecessors, (271), 40 states have call successors, (42), 40 states have call predecessors, (42), 38 states have return successors, (40), 38 states have call predecessors, (40), 39 states have call successors, (40) [2021-05-06 04:13:34,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:13:34,800 INFO L93 Difference]: Finished difference Result 367 states and 406 transitions. [2021-05-06 04:13:34,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-05-06 04:13:34,800 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 6.609756097560975) internal successors, (271), 40 states have internal predecessors, (271), 40 states have call successors, (42), 40 states have call predecessors, (42), 38 states have return successors, (40), 38 states have call predecessors, (40), 39 states have call successors, (40) Word has length 356 [2021-05-06 04:13:34,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:13:34,802 INFO L225 Difference]: With dead ends: 367 [2021-05-06 04:13:34,802 INFO L226 Difference]: Without dead ends: 362 [2021-05-06 04:13:34,803 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 1223.5ms TimeCoverageRelationStatistics Valid=2262, Invalid=3744, Unknown=0, NotChecked=0, Total=6006 [2021-05-06 04:13:34,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2021-05-06 04:13:34,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 362. [2021-05-06 04:13:34,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 278 states have (on average 1.1402877697841727) internal successors, (317), 278 states have internal predecessors, (317), 43 states have call successors, (43), 42 states have call predecessors, (43), 40 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2021-05-06 04:13:34,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 401 transitions. [2021-05-06 04:13:34,814 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 401 transitions. Word has length 356 [2021-05-06 04:13:34,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:13:34,815 INFO L480 AbstractCegarLoop]: Abstraction has 362 states and 401 transitions. [2021-05-06 04:13:34,815 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 41 states, 41 states have (on average 6.609756097560975) internal successors, (271), 40 states have internal predecessors, (271), 40 states have call successors, (42), 40 states have call predecessors, (42), 38 states have return successors, (40), 38 states have call predecessors, (40), 39 states have call successors, (40) [2021-05-06 04:13:34,815 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 401 transitions. [2021-05-06 04:13:34,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2021-05-06 04:13:34,817 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:13:34,817 INFO L523 BasicCegarLoop]: trace histogram [39, 39, 38, 38, 38, 38, 38, 38, 38, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 04:13:35,040 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:13:35,041 INFO L428 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:13:35,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:13:35,041 INFO L82 PathProgramCache]: Analyzing trace with hash 63847254, now seen corresponding path program 38 times [2021-05-06 04:13:35,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:13:35,041 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39851469] [2021-05-06 04:13:35,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:13:35,047 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 04:13:35,047 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [755908016] [2021-05-06 04:13:35,047 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 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:13:35,177 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 04:13:35,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 04:13:35,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 1001 conjuncts, 81 conjunts are in the unsatisfiable core [2021-05-06 04:13:35,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 04:13:35,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:35,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:36,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:36,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:36,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:36,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:36,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:36,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:36,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:36,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:36,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:36,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:36,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:36,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:36,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:36,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:36,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:36,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:36,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:36,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:36,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:36,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:36,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:36,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:36,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:36,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:36,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:36,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:36,326 INFO L134 CoverageAnalysis]: Checked inductivity of 6483 backedges. 76 proven. 6403 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 04:13:36,326 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:13:36,326 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39851469] [2021-05-06 04:13:36,326 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 04:13:36,326 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755908016] [2021-05-06 04:13:36,326 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755908016] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 04:13:36,326 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 04:13:36,327 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2021-05-06 04:13:36,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844522537] [2021-05-06 04:13:36,327 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-05-06 04:13:36,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:13:36,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-05-06 04:13:36,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2021-05-06 04:13:36,328 INFO L87 Difference]: Start difference. First operand 362 states and 401 transitions. Second operand has 42 states, 42 states have (on average 6.619047619047619) internal successors, (278), 41 states have internal predecessors, (278), 41 states have call successors, (43), 41 states have call predecessors, (43), 39 states have return successors, (41), 39 states have call predecessors, (41), 40 states have call successors, (41) [2021-05-06 04:13:37,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:13:37,275 INFO L93 Difference]: Finished difference Result 376 states and 416 transitions. [2021-05-06 04:13:37,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-05-06 04:13:37,276 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 6.619047619047619) internal successors, (278), 41 states have internal predecessors, (278), 41 states have call successors, (43), 41 states have call predecessors, (43), 39 states have return successors, (41), 39 states have call predecessors, (41), 40 states have call successors, (41) Word has length 365 [2021-05-06 04:13:37,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:13:37,277 INFO L225 Difference]: With dead ends: 376 [2021-05-06 04:13:37,277 INFO L226 Difference]: Without dead ends: 371 [2021-05-06 04:13:37,278 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 741 ImplicationChecksByTransitivity, 1302.2ms TimeCoverageRelationStatistics Valid=2380, Invalid=3940, Unknown=0, NotChecked=0, Total=6320 [2021-05-06 04:13:37,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-05-06 04:13:37,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2021-05-06 04:13:37,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 285 states have (on average 1.1403508771929824) internal successors, (325), 285 states have internal predecessors, (325), 44 states have call successors, (44), 43 states have call predecessors, (44), 41 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2021-05-06 04:13:37,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 411 transitions. [2021-05-06 04:13:37,290 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 411 transitions. Word has length 365 [2021-05-06 04:13:37,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:13:37,290 INFO L480 AbstractCegarLoop]: Abstraction has 371 states and 411 transitions. [2021-05-06 04:13:37,291 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 6.619047619047619) internal successors, (278), 41 states have internal predecessors, (278), 41 states have call successors, (43), 41 states have call predecessors, (43), 39 states have return successors, (41), 39 states have call predecessors, (41), 40 states have call successors, (41) [2021-05-06 04:13:37,291 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 411 transitions. [2021-05-06 04:13:37,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2021-05-06 04:13:37,292 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:13:37,293 INFO L523 BasicCegarLoop]: trace histogram [40, 40, 39, 39, 39, 39, 39, 39, 39, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 04:13:37,508 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-05-06 04:13:37,509 INFO L428 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:13:37,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:13:37,509 INFO L82 PathProgramCache]: Analyzing trace with hash -194370340, now seen corresponding path program 39 times [2021-05-06 04:13:37,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:13:37,509 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480622098] [2021-05-06 04:13:37,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:13:37,514 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 04:13:37,514 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1386499377] [2021-05-06 04:13:37,514 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 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:13:37,751 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2021-05-06 04:13:37,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 04:13:37,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 1024 conjuncts, 83 conjunts are in the unsatisfiable core [2021-05-06 04:13:37,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 04:13:37,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:37,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:37,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:37,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:37,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:37,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:37,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:37,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:37,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:37,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:37,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:37,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:37,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:37,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:37,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:37,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:37,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:37,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:37,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:37,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:37,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:37,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:37,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:37,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:37,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:37,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:37,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:37,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:37,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:37,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:37,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:37,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:37,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:37,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:37,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:37,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:37,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:37,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:37,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:37,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:37,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:37,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:38,859 INFO L134 CoverageAnalysis]: Checked inductivity of 6829 backedges. 78 proven. 6747 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 04:13:38,859 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:13:38,859 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480622098] [2021-05-06 04:13:38,859 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 04:13:38,859 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386499377] [2021-05-06 04:13:38,859 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386499377] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 04:13:38,859 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 04:13:38,859 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2021-05-06 04:13:38,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579425411] [2021-05-06 04:13:38,860 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-05-06 04:13:38,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:13:38,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-05-06 04:13:38,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2021-05-06 04:13:38,861 INFO L87 Difference]: Start difference. First operand 371 states and 411 transitions. Second operand has 43 states, 43 states have (on average 6.627906976744186) internal successors, (285), 42 states have internal predecessors, (285), 42 states have call successors, (44), 42 states have call predecessors, (44), 40 states have return successors, (42), 40 states have call predecessors, (42), 41 states have call successors, (42) [2021-05-06 04:13:39,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:13:39,900 INFO L93 Difference]: Finished difference Result 385 states and 426 transitions. [2021-05-06 04:13:39,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-05-06 04:13:39,900 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 6.627906976744186) internal successors, (285), 42 states have internal predecessors, (285), 42 states have call successors, (44), 42 states have call predecessors, (44), 40 states have return successors, (42), 40 states have call predecessors, (42), 41 states have call successors, (42) Word has length 374 [2021-05-06 04:13:39,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:13:39,902 INFO L225 Difference]: With dead ends: 385 [2021-05-06 04:13:39,902 INFO L226 Difference]: Without dead ends: 380 [2021-05-06 04:13:39,902 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 780 ImplicationChecksByTransitivity, 1329.7ms TimeCoverageRelationStatistics Valid=2501, Invalid=4141, Unknown=0, NotChecked=0, Total=6642 [2021-05-06 04:13:39,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2021-05-06 04:13:39,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2021-05-06 04:13:39,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 292 states have (on average 1.1404109589041096) internal successors, (333), 292 states have internal predecessors, (333), 45 states have call successors, (45), 44 states have call predecessors, (45), 42 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2021-05-06 04:13:39,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 421 transitions. [2021-05-06 04:13:39,924 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 421 transitions. Word has length 374 [2021-05-06 04:13:39,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:13:39,926 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 421 transitions. [2021-05-06 04:13:39,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 6.627906976744186) internal successors, (285), 42 states have internal predecessors, (285), 42 states have call successors, (44), 42 states have call predecessors, (44), 40 states have return successors, (42), 40 states have call predecessors, (42), 41 states have call successors, (42) [2021-05-06 04:13:39,926 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 421 transitions. [2021-05-06 04:13:39,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2021-05-06 04:13:39,928 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:13:39,928 INFO L523 BasicCegarLoop]: trace histogram [41, 41, 40, 40, 40, 40, 40, 40, 40, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 04:13:40,152 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:13:40,153 INFO L428 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:13:40,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:13:40,153 INFO L82 PathProgramCache]: Analyzing trace with hash 949326358, now seen corresponding path program 40 times [2021-05-06 04:13:40,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:13:40,153 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707355534] [2021-05-06 04:13:40,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:13:40,158 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 04:13:40,158 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1409142566] [2021-05-06 04:13:40,159 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 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:13:40,314 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 04:13:40,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 04:13:40,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 1047 conjuncts, 85 conjunts are in the unsatisfiable core [2021-05-06 04:13:40,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 04:13:40,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:40,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:41,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:41,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:41,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:41,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:41,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:41,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:41,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:41,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:41,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:41,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:41,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:41,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:41,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:41,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:41,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:41,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:41,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:41,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:41,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:41,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:41,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:41,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:41,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:41,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:41,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:41,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:41,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:41,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:41,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:41,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:41,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:41,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:41,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:41,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:41,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:41,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:41,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:41,458 INFO L134 CoverageAnalysis]: Checked inductivity of 7184 backedges. 80 proven. 7100 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 04:13:41,458 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:13:41,458 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707355534] [2021-05-06 04:13:41,458 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 04:13:41,458 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409142566] [2021-05-06 04:13:41,458 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409142566] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 04:13:41,458 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 04:13:41,458 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2021-05-06 04:13:41,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799414185] [2021-05-06 04:13:41,459 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2021-05-06 04:13:41,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:13:41,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-05-06 04:13:41,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2021-05-06 04:13:41,460 INFO L87 Difference]: Start difference. First operand 380 states and 421 transitions. Second operand has 44 states, 44 states have (on average 6.636363636363637) internal successors, (292), 43 states have internal predecessors, (292), 43 states have call successors, (45), 43 states have call predecessors, (45), 41 states have return successors, (43), 41 states have call predecessors, (43), 42 states have call successors, (43) [2021-05-06 04:13:42,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:13:42,497 INFO L93 Difference]: Finished difference Result 394 states and 436 transitions. [2021-05-06 04:13:42,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-05-06 04:13:42,498 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 6.636363636363637) internal successors, (292), 43 states have internal predecessors, (292), 43 states have call successors, (45), 43 states have call predecessors, (45), 41 states have return successors, (43), 41 states have call predecessors, (43), 42 states have call successors, (43) Word has length 383 [2021-05-06 04:13:42,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:13:42,499 INFO L225 Difference]: With dead ends: 394 [2021-05-06 04:13:42,499 INFO L226 Difference]: Without dead ends: 389 [2021-05-06 04:13:42,500 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 1369.9ms TimeCoverageRelationStatistics Valid=2625, Invalid=4347, Unknown=0, NotChecked=0, Total=6972 [2021-05-06 04:13:42,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2021-05-06 04:13:42,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 389. [2021-05-06 04:13:42,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 299 states have (on average 1.140468227424749) internal successors, (341), 299 states have internal predecessors, (341), 46 states have call successors, (46), 45 states have call predecessors, (46), 43 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2021-05-06 04:13:42,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 431 transitions. [2021-05-06 04:13:42,512 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 431 transitions. Word has length 383 [2021-05-06 04:13:42,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:13:42,512 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 431 transitions. [2021-05-06 04:13:42,513 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 44 states, 44 states have (on average 6.636363636363637) internal successors, (292), 43 states have internal predecessors, (292), 43 states have call successors, (45), 43 states have call predecessors, (45), 41 states have return successors, (43), 41 states have call predecessors, (43), 42 states have call successors, (43) [2021-05-06 04:13:42,513 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 431 transitions. [2021-05-06 04:13:42,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2021-05-06 04:13:42,515 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:13:42,515 INFO L523 BasicCegarLoop]: trace histogram [42, 42, 41, 41, 41, 41, 41, 41, 41, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 04:13:42,728 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:13:42,729 INFO L428 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:13:42,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:13:42,729 INFO L82 PathProgramCache]: Analyzing trace with hash 311977500, now seen corresponding path program 41 times [2021-05-06 04:13:42,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:13:42,729 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589006668] [2021-05-06 04:13:42,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:13:42,735 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 04:13:42,735 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [574963886] [2021-05-06 04:13:42,735 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 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:13:43,097 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2021-05-06 04:13:43,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 04:13:43,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 1070 conjuncts, 87 conjunts are in the unsatisfiable core [2021-05-06 04:13:43,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 04:13:43,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:43,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:44,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:44,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:44,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:44,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:44,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:44,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:44,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:44,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:44,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:44,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:44,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:44,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:44,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:44,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:44,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:44,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:44,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:44,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:44,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:44,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:44,271 INFO L134 CoverageAnalysis]: Checked inductivity of 7548 backedges. 82 proven. 7462 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 04:13:44,271 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:13:44,272 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589006668] [2021-05-06 04:13:44,272 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 04:13:44,272 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574963886] [2021-05-06 04:13:44,272 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574963886] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 04:13:44,272 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 04:13:44,272 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2021-05-06 04:13:44,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074337073] [2021-05-06 04:13:44,273 INFO L460 AbstractCegarLoop]: Interpolant automaton has 45 states [2021-05-06 04:13:44,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:13:44,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-05-06 04:13:44,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2021-05-06 04:13:44,273 INFO L87 Difference]: Start difference. First operand 389 states and 431 transitions. Second operand has 45 states, 45 states have (on average 6.644444444444445) internal successors, (299), 44 states have internal predecessors, (299), 44 states have call successors, (46), 44 states have call predecessors, (46), 42 states have return successors, (44), 42 states have call predecessors, (44), 43 states have call successors, (44) [2021-05-06 04:13:45,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:13:45,338 INFO L93 Difference]: Finished difference Result 403 states and 446 transitions. [2021-05-06 04:13:45,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-05-06 04:13:45,339 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 6.644444444444445) internal successors, (299), 44 states have internal predecessors, (299), 44 states have call successors, (46), 44 states have call predecessors, (46), 42 states have return successors, (44), 42 states have call predecessors, (44), 43 states have call successors, (44) Word has length 392 [2021-05-06 04:13:45,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:13:45,340 INFO L225 Difference]: With dead ends: 403 [2021-05-06 04:13:45,340 INFO L226 Difference]: Without dead ends: 398 [2021-05-06 04:13:45,341 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 1428.3ms TimeCoverageRelationStatistics Valid=2752, Invalid=4558, Unknown=0, NotChecked=0, Total=7310 [2021-05-06 04:13:45,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2021-05-06 04:13:45,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 398. [2021-05-06 04:13:45,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 306 states have (on average 1.1405228758169934) internal successors, (349), 306 states have internal predecessors, (349), 47 states have call successors, (47), 46 states have call predecessors, (47), 44 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2021-05-06 04:13:45,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 441 transitions. [2021-05-06 04:13:45,354 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 441 transitions. Word has length 392 [2021-05-06 04:13:45,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:13:45,354 INFO L480 AbstractCegarLoop]: Abstraction has 398 states and 441 transitions. [2021-05-06 04:13:45,354 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 45 states, 45 states have (on average 6.644444444444445) internal successors, (299), 44 states have internal predecessors, (299), 44 states have call successors, (46), 44 states have call predecessors, (46), 42 states have return successors, (44), 42 states have call predecessors, (44), 43 states have call successors, (44) [2021-05-06 04:13:45,355 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 441 transitions. [2021-05-06 04:13:45,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2021-05-06 04:13:45,357 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:13:45,357 INFO L523 BasicCegarLoop]: trace histogram [43, 43, 42, 42, 42, 42, 42, 42, 42, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 04:13:45,564 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-05-06 04:13:45,564 INFO L428 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:13:45,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:13:45,565 INFO L82 PathProgramCache]: Analyzing trace with hash -432228138, now seen corresponding path program 42 times [2021-05-06 04:13:45,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:13:45,565 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851936761] [2021-05-06 04:13:45,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:13:45,572 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 04:13:45,572 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1443393345] [2021-05-06 04:13:45,572 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 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:13:45,871 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2021-05-06 04:13:45,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 04:13:45,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 1093 conjuncts, 89 conjunts are in the unsatisfiable core [2021-05-06 04:13:45,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 04:13:45,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:45,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:45,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:45,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:45,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:45,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:45,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:45,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:45,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:45,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:45,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:45,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:45,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:45,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:45,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:45,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:45,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:45,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:45,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:45,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:45,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:45,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:45,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:45,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:46,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:47,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:47,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:47,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:47,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:47,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:47,100 INFO L134 CoverageAnalysis]: Checked inductivity of 7921 backedges. 84 proven. 7833 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 04:13:47,100 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:13:47,100 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851936761] [2021-05-06 04:13:47,100 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 04:13:47,100 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443393345] [2021-05-06 04:13:47,100 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443393345] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 04:13:47,100 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 04:13:47,100 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2021-05-06 04:13:47,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679252228] [2021-05-06 04:13:47,101 INFO L460 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-05-06 04:13:47,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:13:47,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-05-06 04:13:47,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2021-05-06 04:13:47,102 INFO L87 Difference]: Start difference. First operand 398 states and 441 transitions. Second operand has 46 states, 46 states have (on average 6.6521739130434785) internal successors, (306), 45 states have internal predecessors, (306), 45 states have call successors, (47), 45 states have call predecessors, (47), 43 states have return successors, (45), 43 states have call predecessors, (45), 44 states have call successors, (45) [2021-05-06 04:13:48,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:13:48,324 INFO L93 Difference]: Finished difference Result 412 states and 456 transitions. [2021-05-06 04:13:48,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-05-06 04:13:48,324 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 6.6521739130434785) internal successors, (306), 45 states have internal predecessors, (306), 45 states have call successors, (47), 45 states have call predecessors, (47), 43 states have return successors, (45), 43 states have call predecessors, (45), 44 states have call successors, (45) Word has length 401 [2021-05-06 04:13:48,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:13:48,326 INFO L225 Difference]: With dead ends: 412 [2021-05-06 04:13:48,326 INFO L226 Difference]: Without dead ends: 407 [2021-05-06 04:13:48,326 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 356 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 903 ImplicationChecksByTransitivity, 1597.4ms TimeCoverageRelationStatistics Valid=2882, Invalid=4774, Unknown=0, NotChecked=0, Total=7656 [2021-05-06 04:13:48,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2021-05-06 04:13:48,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 407. [2021-05-06 04:13:48,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 313 states have (on average 1.1405750798722045) internal successors, (357), 313 states have internal predecessors, (357), 48 states have call successors, (48), 47 states have call predecessors, (48), 45 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2021-05-06 04:13:48,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 451 transitions. [2021-05-06 04:13:48,340 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 451 transitions. Word has length 401 [2021-05-06 04:13:48,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:13:48,340 INFO L480 AbstractCegarLoop]: Abstraction has 407 states and 451 transitions. [2021-05-06 04:13:48,340 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 46 states, 46 states have (on average 6.6521739130434785) internal successors, (306), 45 states have internal predecessors, (306), 45 states have call successors, (47), 45 states have call predecessors, (47), 43 states have return successors, (45), 43 states have call predecessors, (45), 44 states have call successors, (45) [2021-05-06 04:13:48,340 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 451 transitions. [2021-05-06 04:13:48,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2021-05-06 04:13:48,342 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:13:48,343 INFO L523 BasicCegarLoop]: trace histogram [44, 44, 43, 43, 43, 43, 43, 43, 43, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 04:13:48,564 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-05-06 04:13:48,565 INFO L428 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:13:48,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:13:48,565 INFO L82 PathProgramCache]: Analyzing trace with hash -290400420, now seen corresponding path program 43 times [2021-05-06 04:13:48,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:13:48,565 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592042924] [2021-05-06 04:13:48,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:13:48,572 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 04:13:48,572 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [965327088] [2021-05-06 04:13:48,572 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:13:48,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 04:13:48,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 1116 conjuncts, 91 conjunts are in the unsatisfiable core [2021-05-06 04:13:48,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 04:13:48,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:48,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:48,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:48,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:48,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:48,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:48,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:48,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:48,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:48,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:48,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:48,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:48,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:48,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:48,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:48,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:48,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:48,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:48,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:48,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:48,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:48,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:48,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:48,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:48,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:48,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:48,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:48,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:48,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:48,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:48,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:48,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:48,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:48,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:48,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:48,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:48,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:48,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:48,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:48,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:48,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:48,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:48,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:48,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:48,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:49,992 INFO L134 CoverageAnalysis]: Checked inductivity of 8303 backedges. 86 proven. 8213 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 04:13:49,992 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:13:49,992 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592042924] [2021-05-06 04:13:49,992 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 04:13:49,992 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965327088] [2021-05-06 04:13:49,992 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965327088] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 04:13:49,992 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 04:13:49,992 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2021-05-06 04:13:49,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585542619] [2021-05-06 04:13:49,993 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2021-05-06 04:13:49,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:13:49,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-05-06 04:13:49,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2021-05-06 04:13:49,994 INFO L87 Difference]: Start difference. First operand 407 states and 451 transitions. Second operand has 47 states, 47 states have (on average 6.659574468085107) internal successors, (313), 46 states have internal predecessors, (313), 46 states have call successors, (48), 46 states have call predecessors, (48), 44 states have return successors, (46), 44 states have call predecessors, (46), 45 states have call successors, (46) [2021-05-06 04:13:51,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:13:51,125 INFO L93 Difference]: Finished difference Result 421 states and 466 transitions. [2021-05-06 04:13:51,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-05-06 04:13:51,125 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 6.659574468085107) internal successors, (313), 46 states have internal predecessors, (313), 46 states have call successors, (48), 46 states have call predecessors, (48), 44 states have return successors, (46), 44 states have call predecessors, (46), 45 states have call successors, (46) Word has length 410 [2021-05-06 04:13:51,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:13:51,126 INFO L225 Difference]: With dead ends: 421 [2021-05-06 04:13:51,126 INFO L226 Difference]: Without dead ends: 416 [2021-05-06 04:13:51,127 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 946 ImplicationChecksByTransitivity, 1572.5ms TimeCoverageRelationStatistics Valid=3015, Invalid=4995, Unknown=0, NotChecked=0, Total=8010 [2021-05-06 04:13:51,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2021-05-06 04:13:51,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 416. [2021-05-06 04:13:51,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 320 states have (on average 1.140625) internal successors, (365), 320 states have internal predecessors, (365), 49 states have call successors, (49), 48 states have call predecessors, (49), 46 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2021-05-06 04:13:51,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 461 transitions. [2021-05-06 04:13:51,139 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 461 transitions. Word has length 410 [2021-05-06 04:13:51,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:13:51,140 INFO L480 AbstractCegarLoop]: Abstraction has 416 states and 461 transitions. [2021-05-06 04:13:51,140 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 47 states, 47 states have (on average 6.659574468085107) internal successors, (313), 46 states have internal predecessors, (313), 46 states have call successors, (48), 46 states have call predecessors, (48), 44 states have return successors, (46), 44 states have call predecessors, (46), 45 states have call successors, (46) [2021-05-06 04:13:51,140 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 461 transitions. [2021-05-06 04:13:51,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2021-05-06 04:13:51,142 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:13:51,142 INFO L523 BasicCegarLoop]: trace histogram [45, 45, 44, 44, 44, 44, 44, 44, 44, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 04:13:51,367 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-05-06 04:13:51,367 INFO L428 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:13:51,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:13:51,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1569738858, now seen corresponding path program 44 times [2021-05-06 04:13:51,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:13:51,367 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59932280] [2021-05-06 04:13:51,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:13:51,373 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 04:13:51,373 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [884474563] [2021-05-06 04:13:51,373 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 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:13:51,518 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 04:13:51,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 04:13:51,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 1139 conjuncts, 93 conjunts are in the unsatisfiable core [2021-05-06 04:13:51,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 04:13:51,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:51,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:52,823 INFO L134 CoverageAnalysis]: Checked inductivity of 8694 backedges. 88 proven. 8602 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 04:13:52,824 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:13:52,824 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59932280] [2021-05-06 04:13:52,824 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 04:13:52,824 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884474563] [2021-05-06 04:13:52,824 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884474563] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 04:13:52,824 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 04:13:52,824 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2021-05-06 04:13:52,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580365026] [2021-05-06 04:13:52,824 INFO L460 AbstractCegarLoop]: Interpolant automaton has 48 states [2021-05-06 04:13:52,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:13:52,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-05-06 04:13:52,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2021-05-06 04:13:52,825 INFO L87 Difference]: Start difference. First operand 416 states and 461 transitions. Second operand has 48 states, 48 states have (on average 6.666666666666667) internal successors, (320), 47 states have internal predecessors, (320), 47 states have call successors, (49), 47 states have call predecessors, (49), 45 states have return successors, (47), 45 states have call predecessors, (47), 46 states have call successors, (47) [2021-05-06 04:13:53,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:13:53,991 INFO L93 Difference]: Finished difference Result 430 states and 476 transitions. [2021-05-06 04:13:53,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-05-06 04:13:53,992 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 6.666666666666667) internal successors, (320), 47 states have internal predecessors, (320), 47 states have call successors, (49), 47 states have call predecessors, (49), 45 states have return successors, (47), 45 states have call predecessors, (47), 46 states have call successors, (47) Word has length 419 [2021-05-06 04:13:53,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:13:53,993 INFO L225 Difference]: With dead ends: 430 [2021-05-06 04:13:53,993 INFO L226 Difference]: Without dead ends: 425 [2021-05-06 04:13:53,994 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 372 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 990 ImplicationChecksByTransitivity, 1625.7ms TimeCoverageRelationStatistics Valid=3151, Invalid=5221, Unknown=0, NotChecked=0, Total=8372 [2021-05-06 04:13:53,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2021-05-06 04:13:54,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 425. [2021-05-06 04:13:54,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 327 states have (on average 1.1406727828746177) internal successors, (373), 327 states have internal predecessors, (373), 50 states have call successors, (50), 49 states have call predecessors, (50), 47 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2021-05-06 04:13:54,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 471 transitions. [2021-05-06 04:13:54,007 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 471 transitions. Word has length 419 [2021-05-06 04:13:54,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:13:54,007 INFO L480 AbstractCegarLoop]: Abstraction has 425 states and 471 transitions. [2021-05-06 04:13:54,008 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 48 states, 48 states have (on average 6.666666666666667) internal successors, (320), 47 states have internal predecessors, (320), 47 states have call successors, (49), 47 states have call predecessors, (49), 45 states have return successors, (47), 45 states have call predecessors, (47), 46 states have call successors, (47) [2021-05-06 04:13:54,008 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 471 transitions. [2021-05-06 04:13:54,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2021-05-06 04:13:54,010 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:13:54,010 INFO L523 BasicCegarLoop]: trace histogram [46, 46, 45, 45, 45, 45, 45, 45, 45, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 04:13:54,226 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:13:54,226 INFO L428 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:13:54,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:13:54,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1803061092, now seen corresponding path program 45 times [2021-05-06 04:13:54,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:13:54,227 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441570405] [2021-05-06 04:13:54,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:13:54,232 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 04:13:54,232 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1639108381] [2021-05-06 04:13:54,232 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 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:13:54,495 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2021-05-06 04:13:54,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 04:13:54,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 1162 conjuncts, 95 conjunts are in the unsatisfiable core [2021-05-06 04:13:54,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 04:13:54,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:54,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:55,855 INFO L134 CoverageAnalysis]: Checked inductivity of 9094 backedges. 90 proven. 9000 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 04:13:55,855 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:13:55,855 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441570405] [2021-05-06 04:13:55,855 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 04:13:55,855 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639108381] [2021-05-06 04:13:55,855 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639108381] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 04:13:55,855 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 04:13:55,855 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2021-05-06 04:13:55,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800966050] [2021-05-06 04:13:55,856 INFO L460 AbstractCegarLoop]: Interpolant automaton has 49 states [2021-05-06 04:13:55,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:13:55,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-05-06 04:13:55,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2021-05-06 04:13:55,856 INFO L87 Difference]: Start difference. First operand 425 states and 471 transitions. Second operand has 49 states, 49 states have (on average 6.673469387755102) internal successors, (327), 48 states have internal predecessors, (327), 48 states have call successors, (50), 48 states have call predecessors, (50), 46 states have return successors, (48), 46 states have call predecessors, (48), 47 states have call successors, (48) [2021-05-06 04:13:57,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:13:57,088 INFO L93 Difference]: Finished difference Result 439 states and 486 transitions. [2021-05-06 04:13:57,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2021-05-06 04:13:57,089 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 6.673469387755102) internal successors, (327), 48 states have internal predecessors, (327), 48 states have call successors, (50), 48 states have call predecessors, (50), 46 states have return successors, (48), 46 states have call predecessors, (48), 47 states have call successors, (48) Word has length 428 [2021-05-06 04:13:57,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:13:57,090 INFO L225 Difference]: With dead ends: 439 [2021-05-06 04:13:57,090 INFO L226 Difference]: Without dead ends: 434 [2021-05-06 04:13:57,091 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 1696.3ms TimeCoverageRelationStatistics Valid=3290, Invalid=5452, Unknown=0, NotChecked=0, Total=8742 [2021-05-06 04:13:57,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2021-05-06 04:13:57,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2021-05-06 04:13:57,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 334 states have (on average 1.1407185628742516) internal successors, (381), 334 states have internal predecessors, (381), 51 states have call successors, (51), 50 states have call predecessors, (51), 48 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2021-05-06 04:13:57,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 481 transitions. [2021-05-06 04:13:57,104 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 481 transitions. Word has length 428 [2021-05-06 04:13:57,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:13:57,104 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 481 transitions. [2021-05-06 04:13:57,105 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 49 states, 49 states have (on average 6.673469387755102) internal successors, (327), 48 states have internal predecessors, (327), 48 states have call successors, (50), 48 states have call predecessors, (50), 46 states have return successors, (48), 46 states have call predecessors, (48), 47 states have call successors, (48) [2021-05-06 04:13:57,105 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 481 transitions. [2021-05-06 04:13:57,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2021-05-06 04:13:57,107 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:13:57,107 INFO L523 BasicCegarLoop]: trace histogram [47, 47, 46, 46, 46, 46, 46, 46, 46, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 04:13:57,320 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-05-06 04:13:57,321 INFO L428 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:13:57,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:13:57,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1876588118, now seen corresponding path program 46 times [2021-05-06 04:13:57,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:13:57,321 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194548552] [2021-05-06 04:13:57,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:13:57,326 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 04:13:57,326 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [815302333] [2021-05-06 04:13:57,327 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 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:13:57,497 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 04:13:57,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 04:13:57,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 1185 conjuncts, 97 conjunts are in the unsatisfiable core [2021-05-06 04:13:57,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 04:13:57,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:57,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:13:58,906 INFO L134 CoverageAnalysis]: Checked inductivity of 9503 backedges. 92 proven. 9407 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 04:13:58,906 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:13:58,906 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194548552] [2021-05-06 04:13:58,906 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 04:13:58,906 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815302333] [2021-05-06 04:13:58,906 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815302333] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 04:13:58,906 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 04:13:58,906 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2021-05-06 04:13:58,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325404503] [2021-05-06 04:13:58,907 INFO L460 AbstractCegarLoop]: Interpolant automaton has 50 states [2021-05-06 04:13:58,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:13:58,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-05-06 04:13:58,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2021-05-06 04:13:58,908 INFO L87 Difference]: Start difference. First operand 434 states and 481 transitions. Second operand has 50 states, 50 states have (on average 6.68) internal successors, (334), 49 states have internal predecessors, (334), 49 states have call successors, (51), 49 states have call predecessors, (51), 47 states have return successors, (49), 47 states have call predecessors, (49), 48 states have call successors, (49) [2021-05-06 04:14:00,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:14:00,119 INFO L93 Difference]: Finished difference Result 448 states and 496 transitions. [2021-05-06 04:14:00,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-05-06 04:14:00,119 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 6.68) internal successors, (334), 49 states have internal predecessors, (334), 49 states have call successors, (51), 49 states have call predecessors, (51), 47 states have return successors, (49), 47 states have call predecessors, (49), 48 states have call successors, (49) Word has length 437 [2021-05-06 04:14:00,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:14:00,120 INFO L225 Difference]: With dead ends: 448 [2021-05-06 04:14:00,120 INFO L226 Difference]: Without dead ends: 443 [2021-05-06 04:14:00,121 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 388 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 1743.6ms TimeCoverageRelationStatistics Valid=3432, Invalid=5688, Unknown=0, NotChecked=0, Total=9120 [2021-05-06 04:14:00,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2021-05-06 04:14:00,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 443. [2021-05-06 04:14:00,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 341 states have (on average 1.1407624633431086) internal successors, (389), 341 states have internal predecessors, (389), 52 states have call successors, (52), 51 states have call predecessors, (52), 49 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2021-05-06 04:14:00,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 491 transitions. [2021-05-06 04:14:00,133 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 491 transitions. Word has length 437 [2021-05-06 04:14:00,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:14:00,134 INFO L480 AbstractCegarLoop]: Abstraction has 443 states and 491 transitions. [2021-05-06 04:14:00,134 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 50 states, 50 states have (on average 6.68) internal successors, (334), 49 states have internal predecessors, (334), 49 states have call successors, (51), 49 states have call predecessors, (51), 47 states have return successors, (49), 47 states have call predecessors, (49), 48 states have call successors, (49) [2021-05-06 04:14:00,134 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 491 transitions. [2021-05-06 04:14:00,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2021-05-06 04:14:00,136 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:14:00,137 INFO L523 BasicCegarLoop]: trace histogram [48, 48, 47, 47, 47, 47, 47, 47, 47, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 04:14:00,361 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-05-06 04:14:00,361 INFO L428 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:14:00,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:14:00,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1123043804, now seen corresponding path program 47 times [2021-05-06 04:14:00,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:14:00,362 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356065029] [2021-05-06 04:14:00,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:14:00,368 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 04:14:00,368 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1804743788] [2021-05-06 04:14:00,368 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 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:14:00,766 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2021-05-06 04:14:00,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 04:14:00,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 1208 conjuncts, 99 conjunts are in the unsatisfiable core [2021-05-06 04:14:00,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 04:14:00,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:00,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:00,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:00,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:00,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:00,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:00,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:00,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:00,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:00,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:00,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:00,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:00,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:00,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:00,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:00,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:00,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:00,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:00,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:00,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:00,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:00,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:00,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:00,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:00,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:00,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:00,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:00,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:00,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:00,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:00,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:00,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:00,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:00,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:00,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:00,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:00,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:00,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:00,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:01,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:02,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:02,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:02,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:02,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:02,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:02,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:02,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:02,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:02,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:02,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:02,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:02,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:02,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:02,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:02,226 INFO L134 CoverageAnalysis]: Checked inductivity of 9921 backedges. 94 proven. 9823 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 04:14:02,226 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:14:02,226 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356065029] [2021-05-06 04:14:02,226 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 04:14:02,226 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804743788] [2021-05-06 04:14:02,226 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804743788] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 04:14:02,226 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 04:14:02,226 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2021-05-06 04:14:02,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23741219] [2021-05-06 04:14:02,227 INFO L460 AbstractCegarLoop]: Interpolant automaton has 51 states [2021-05-06 04:14:02,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:14:02,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-05-06 04:14:02,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2021-05-06 04:14:02,228 INFO L87 Difference]: Start difference. First operand 443 states and 491 transitions. Second operand has 51 states, 51 states have (on average 6.686274509803922) internal successors, (341), 50 states have internal predecessors, (341), 50 states have call successors, (52), 50 states have call predecessors, (52), 48 states have return successors, (50), 48 states have call predecessors, (50), 49 states have call successors, (50) [2021-05-06 04:14:03,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:14:03,531 INFO L93 Difference]: Finished difference Result 457 states and 506 transitions. [2021-05-06 04:14:03,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-05-06 04:14:03,532 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 6.686274509803922) internal successors, (341), 50 states have internal predecessors, (341), 50 states have call successors, (52), 50 states have call predecessors, (52), 48 states have return successors, (50), 48 states have call predecessors, (50), 49 states have call successors, (50) Word has length 446 [2021-05-06 04:14:03,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:14:03,533 INFO L225 Difference]: With dead ends: 457 [2021-05-06 04:14:03,533 INFO L226 Difference]: Without dead ends: 452 [2021-05-06 04:14:03,534 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1128 ImplicationChecksByTransitivity, 1859.2ms TimeCoverageRelationStatistics Valid=3577, Invalid=5929, Unknown=0, NotChecked=0, Total=9506 [2021-05-06 04:14:03,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2021-05-06 04:14:03,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 452. [2021-05-06 04:14:03,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 348 states have (on average 1.1408045977011494) internal successors, (397), 348 states have internal predecessors, (397), 53 states have call successors, (53), 52 states have call predecessors, (53), 50 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2021-05-06 04:14:03,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 501 transitions. [2021-05-06 04:14:03,545 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 501 transitions. Word has length 446 [2021-05-06 04:14:03,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:14:03,546 INFO L480 AbstractCegarLoop]: Abstraction has 452 states and 501 transitions. [2021-05-06 04:14:03,546 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 51 states, 51 states have (on average 6.686274509803922) internal successors, (341), 50 states have internal predecessors, (341), 50 states have call successors, (52), 50 states have call predecessors, (52), 48 states have return successors, (50), 48 states have call predecessors, (50), 49 states have call successors, (50) [2021-05-06 04:14:03,546 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 501 transitions. [2021-05-06 04:14:03,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2021-05-06 04:14:03,548 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:14:03,548 INFO L523 BasicCegarLoop]: trace histogram [49, 49, 48, 48, 48, 48, 48, 48, 48, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 04:14:03,768 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:14:03,769 INFO L428 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:14:03,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:14:03,769 INFO L82 PathProgramCache]: Analyzing trace with hash 2116619542, now seen corresponding path program 48 times [2021-05-06 04:14:03,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:14:03,769 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593220281] [2021-05-06 04:14:03,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:14:03,775 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 04:14:03,775 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [936877130] [2021-05-06 04:14:03,775 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 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:14:04,112 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2021-05-06 04:14:04,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 04:14:04,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 1231 conjuncts, 101 conjunts are in the unsatisfiable core [2021-05-06 04:14:04,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 04:14:04,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:04,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:05,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:05,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:05,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:05,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:05,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:05,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:05,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:05,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:05,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:05,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:05,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:05,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:05,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:05,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:05,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:05,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:05,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:05,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:05,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:05,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:05,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:05,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:05,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:05,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:05,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:05,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:05,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:05,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:05,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:05,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:05,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:05,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:05,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:05,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:05,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:05,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:05,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:05,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:05,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:05,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:05,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:05,607 INFO L134 CoverageAnalysis]: Checked inductivity of 10348 backedges. 96 proven. 10248 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 04:14:05,607 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:14:05,607 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593220281] [2021-05-06 04:14:05,607 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 04:14:05,607 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936877130] [2021-05-06 04:14:05,607 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936877130] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 04:14:05,607 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 04:14:05,607 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2021-05-06 04:14:05,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178994721] [2021-05-06 04:14:05,607 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-05-06 04:14:05,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:14:05,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-05-06 04:14:05,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2021-05-06 04:14:05,608 INFO L87 Difference]: Start difference. First operand 452 states and 501 transitions. Second operand has 52 states, 52 states have (on average 6.6923076923076925) internal successors, (348), 51 states have internal predecessors, (348), 51 states have call successors, (53), 51 states have call predecessors, (53), 49 states have return successors, (51), 49 states have call predecessors, (51), 50 states have call successors, (51) [2021-05-06 04:14:07,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:14:07,052 INFO L93 Difference]: Finished difference Result 466 states and 516 transitions. [2021-05-06 04:14:07,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-05-06 04:14:07,052 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 6.6923076923076925) internal successors, (348), 51 states have internal predecessors, (348), 51 states have call successors, (53), 51 states have call predecessors, (53), 49 states have return successors, (51), 49 states have call predecessors, (51), 50 states have call successors, (51) Word has length 455 [2021-05-06 04:14:07,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:14:07,054 INFO L225 Difference]: With dead ends: 466 [2021-05-06 04:14:07,054 INFO L226 Difference]: Without dead ends: 461 [2021-05-06 04:14:07,055 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 404 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1176 ImplicationChecksByTransitivity, 1989.8ms TimeCoverageRelationStatistics Valid=3725, Invalid=6175, Unknown=0, NotChecked=0, Total=9900 [2021-05-06 04:14:07,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2021-05-06 04:14:07,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 461. [2021-05-06 04:14:07,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 355 states have (on average 1.1408450704225352) internal successors, (405), 355 states have internal predecessors, (405), 54 states have call successors, (54), 53 states have call predecessors, (54), 51 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2021-05-06 04:14:07,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 511 transitions. [2021-05-06 04:14:07,068 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 511 transitions. Word has length 455 [2021-05-06 04:14:07,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:14:07,068 INFO L480 AbstractCegarLoop]: Abstraction has 461 states and 511 transitions. [2021-05-06 04:14:07,068 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 52 states, 52 states have (on average 6.6923076923076925) internal successors, (348), 51 states have internal predecessors, (348), 51 states have call successors, (53), 51 states have call predecessors, (53), 49 states have return successors, (51), 49 states have call predecessors, (51), 50 states have call successors, (51) [2021-05-06 04:14:07,069 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 511 transitions. [2021-05-06 04:14:07,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2021-05-06 04:14:07,071 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:14:07,071 INFO L523 BasicCegarLoop]: trace histogram [50, 50, 49, 49, 49, 49, 49, 49, 49, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 04:14:07,296 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2021-05-06 04:14:07,297 INFO L428 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:14:07,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:14:07,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1413526756, now seen corresponding path program 49 times [2021-05-06 04:14:07,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:14:07,297 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289969702] [2021-05-06 04:14:07,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:14:07,303 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 04:14:07,303 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [34416303] [2021-05-06 04:14:07,303 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:14:07,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 04:14:07,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 1254 conjuncts, 103 conjunts are in the unsatisfiable core [2021-05-06 04:14:07,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 04:14:07,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:07,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:08,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:09,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:09,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 04:14:09,028 INFO L134 CoverageAnalysis]: Checked inductivity of 10784 backedges. 98 proven. 10682 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 04:14:09,028 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 04:14:09,028 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289969702] [2021-05-06 04:14:09,028 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 04:14:09,028 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34416303] [2021-05-06 04:14:09,028 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34416303] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 04:14:09,028 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 04:14:09,028 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2021-05-06 04:14:09,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598884991] [2021-05-06 04:14:09,028 INFO L460 AbstractCegarLoop]: Interpolant automaton has 53 states [2021-05-06 04:14:09,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 04:14:09,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-05-06 04:14:09,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2021-05-06 04:14:09,029 INFO L87 Difference]: Start difference. First operand 461 states and 511 transitions. Second operand has 53 states, 53 states have (on average 6.69811320754717) internal successors, (355), 52 states have internal predecessors, (355), 52 states have call successors, (54), 52 states have call predecessors, (54), 50 states have return successors, (52), 50 states have call predecessors, (52), 51 states have call successors, (52) [2021-05-06 04:14:10,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 04:14:10,485 INFO L93 Difference]: Finished difference Result 475 states and 526 transitions. [2021-05-06 04:14:10,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-05-06 04:14:10,486 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 6.69811320754717) internal successors, (355), 52 states have internal predecessors, (355), 52 states have call successors, (54), 52 states have call predecessors, (54), 50 states have return successors, (52), 50 states have call predecessors, (52), 51 states have call successors, (52) Word has length 464 [2021-05-06 04:14:10,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 04:14:10,487 INFO L225 Difference]: With dead ends: 475 [2021-05-06 04:14:10,487 INFO L226 Difference]: Without dead ends: 470 [2021-05-06 04:14:10,488 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 412 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1225 ImplicationChecksByTransitivity, 2027.1ms TimeCoverageRelationStatistics Valid=3876, Invalid=6426, Unknown=0, NotChecked=0, Total=10302 [2021-05-06 04:14:10,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2021-05-06 04:14:10,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 470. [2021-05-06 04:14:10,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 362 states have (on average 1.1408839779005524) internal successors, (413), 362 states have internal predecessors, (413), 55 states have call successors, (55), 54 states have call predecessors, (55), 52 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2021-05-06 04:14:10,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 521 transitions. [2021-05-06 04:14:10,502 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 521 transitions. Word has length 464 [2021-05-06 04:14:10,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 04:14:10,502 INFO L480 AbstractCegarLoop]: Abstraction has 470 states and 521 transitions. [2021-05-06 04:14:10,503 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 53 states, 53 states have (on average 6.69811320754717) internal successors, (355), 52 states have internal predecessors, (355), 52 states have call successors, (54), 52 states have call predecessors, (54), 50 states have return successors, (52), 50 states have call predecessors, (52), 51 states have call successors, (52) [2021-05-06 04:14:10,503 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 521 transitions. [2021-05-06 04:14:10,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2021-05-06 04:14:10,505 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 04:14:10,505 INFO L523 BasicCegarLoop]: trace histogram [51, 51, 50, 50, 50, 50, 50, 50, 50, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 04:14:10,720 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,53 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:14:10,721 INFO L428 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 04:14:10,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 04:14:10,721 INFO L82 PathProgramCache]: Analyzing trace with hash -368610346, now seen corresponding path program 50 times [2021-05-06 04:14:10,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 04:14:10,721 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621989237] [2021-05-06 04:14:10,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 04:14:10,731 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 04:14:10,731 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1331112474] [2021-05-06 04:14:10,731 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 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 04:14:10,957 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 04:14:10,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-05-06 04:14:10,957 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-06 04:14:11,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-06 04:14:11,054 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-06 04:14:11,688 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-05-06 04:14:11,688 INFO L624 BasicCegarLoop]: Counterexample might be feasible [2021-05-06 04:14:11,900 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2021-05-06 04:14:12,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 04:14:12 BoogieIcfgContainer [2021-05-06 04:14:12,058 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 04:14:12,059 INFO L168 Benchmark]: Toolchain (without parser) took 87871.21 ms. Allocated memory was 199.2 MB in the beginning and 450.9 MB in the end (delta: 251.7 MB). Free memory was 163.7 MB in the beginning and 281.2 MB in the end (delta: -117.4 MB). Peak memory consumption was 134.5 MB. Max. memory is 8.0 GB. [2021-05-06 04:14:12,059 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 199.2 MB. Free memory is still 180.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 04:14:12,059 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.85 ms. Allocated memory is still 199.2 MB. Free memory was 163.5 MB in the beginning and 182.4 MB in the end (delta: -18.8 MB). Peak memory consumption was 11.0 MB. Max. memory is 8.0 GB. [2021-05-06 04:14:12,060 INFO L168 Benchmark]: Boogie Preprocessor took 39.86 ms. Allocated memory is still 199.2 MB. Free memory was 182.4 MB in the beginning and 180.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-06 04:14:12,060 INFO L168 Benchmark]: RCFGBuilder took 348.56 ms. Allocated memory is still 199.2 MB. Free memory was 180.8 MB in the beginning and 165.6 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-05-06 04:14:12,060 INFO L168 Benchmark]: TraceAbstraction took 87215.18 ms. Allocated memory was 199.2 MB in the beginning and 450.9 MB in the end (delta: 251.7 MB). Free memory was 165.0 MB in the beginning and 281.2 MB in the end (delta: -116.1 MB). Peak memory consumption was 136.1 MB. Max. memory is 8.0 GB. [2021-05-06 04:14:12,063 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 199.2 MB. Free memory is still 180.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 259.85 ms. Allocated memory is still 199.2 MB. Free memory was 163.5 MB in the beginning and 182.4 MB in the end (delta: -18.8 MB). Peak memory consumption was 11.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 39.86 ms. Allocated memory is still 199.2 MB. Free memory was 182.4 MB in the beginning and 180.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 348.56 ms. Allocated memory is still 199.2 MB. Free memory was 180.8 MB in the beginning and 165.6 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 87215.18 ms. Allocated memory was 199.2 MB in the beginning and 450.9 MB in the end (delta: 251.7 MB). Free memory was 165.0 MB in the beginning and 281.2 MB in the end (delta: -116.1 MB). Peak memory consumption was 136.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; VAL [\old(counter)=52, counter=0] [L24] int x1, x2; [L25] int y1, y2, y3; [L26] x1 = __VERIFIER_nondet_int() [L27] x2 = __VERIFIER_nondet_int() [L29] CALL assume_abort_if_not(x1 >= 0) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L29] RET assume_abort_if_not(x1 >= 0) VAL [\old(counter)=0, counter=0, x1=51, x2=1] [L30] CALL assume_abort_if_not(x2 != 0) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L30] RET assume_abort_if_not(x2 != 0) VAL [\old(counter)=0, counter=0, x1=51, x2=1] [L32] y1 = 0 [L33] y2 = 0 [L34] y3 = x1 VAL [\old(counter)=0, counter=0, x1=51, x2=1, y1=0, y2=0, y3=51] [L36] EXPR counter++ VAL [\old(counter)=0, counter=1, counter++=0, x1=51, x2=1, y1=0, y2=0, y3=51] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=1] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=1] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=1, x1=51, x2=1, y1=0, y2=0, y3=51] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=1, x1=51, x2=1, y1=0, y2=0, y3=51] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=1, x1=51, x2=1, y1=1, y2=0, y3=50] [L36] EXPR counter++ VAL [\old(counter)=0, counter=2, counter++=1, x1=51, x2=1, y1=1, y2=0, y3=50] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=2] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=2] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=2, x1=51, x2=1, y1=1, y2=0, y3=50] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=2, x1=51, x2=1, y1=1, y2=0, y3=50] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=2, x1=51, x2=1, y1=2, y2=0, y3=49] [L36] EXPR counter++ VAL [\old(counter)=0, counter=3, counter++=2, x1=51, x2=1, y1=2, y2=0, y3=49] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=3] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=3] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=3, x1=51, x2=1, y1=2, y2=0, y3=49] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=3, x1=51, x2=1, y1=2, y2=0, y3=49] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=3, x1=51, x2=1, y1=3, y2=0, y3=48] [L36] EXPR counter++ VAL [\old(counter)=0, counter=4, counter++=3, x1=51, x2=1, y1=3, y2=0, y3=48] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=4] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=4] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=4, x1=51, x2=1, y1=3, y2=0, y3=48] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=4, x1=51, x2=1, y1=3, y2=0, y3=48] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=4, x1=51, x2=1, y1=4, y2=0, y3=47] [L36] EXPR counter++ VAL [\old(counter)=0, counter=5, counter++=4, x1=51, x2=1, y1=4, y2=0, y3=47] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=5] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=5] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=5, x1=51, x2=1, y1=4, y2=0, y3=47] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=5, x1=51, x2=1, y1=4, y2=0, y3=47] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=5, x1=51, x2=1, y1=5, y2=0, y3=46] [L36] EXPR counter++ VAL [\old(counter)=0, counter=6, counter++=5, x1=51, x2=1, y1=5, y2=0, y3=46] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=6] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=6] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=6, x1=51, x2=1, y1=5, y2=0, y3=46] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=6, x1=51, x2=1, y1=5, y2=0, y3=46] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=6, x1=51, x2=1, y1=6, y2=0, y3=45] [L36] EXPR counter++ VAL [\old(counter)=0, counter=7, counter++=6, x1=51, x2=1, y1=6, y2=0, y3=45] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=7] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=7] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=7, x1=51, x2=1, y1=6, y2=0, y3=45] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=7, x1=51, x2=1, y1=6, y2=0, y3=45] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=7, x1=51, x2=1, y1=7, y2=0, y3=44] [L36] EXPR counter++ VAL [\old(counter)=0, counter=8, counter++=7, x1=51, x2=1, y1=7, y2=0, y3=44] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=8] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=8] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=8, x1=51, x2=1, y1=7, y2=0, y3=44] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=8, x1=51, x2=1, y1=7, y2=0, y3=44] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=8, x1=51, x2=1, y1=8, y2=0, y3=43] [L36] EXPR counter++ VAL [\old(counter)=0, counter=9, counter++=8, x1=51, x2=1, y1=8, y2=0, y3=43] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=9] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=9] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=9, x1=51, x2=1, y1=8, y2=0, y3=43] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=9, x1=51, x2=1, y1=8, y2=0, y3=43] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=9, x1=51, x2=1, y1=9, y2=0, y3=42] [L36] EXPR counter++ VAL [\old(counter)=0, counter=10, counter++=9, x1=51, x2=1, y1=9, y2=0, y3=42] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=10] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=10] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=10, x1=51, x2=1, y1=9, y2=0, y3=42] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=10, x1=51, x2=1, y1=9, y2=0, y3=42] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=10, x1=51, x2=1, y1=10, y2=0, y3=41] [L36] EXPR counter++ VAL [\old(counter)=0, counter=11, counter++=10, x1=51, x2=1, y1=10, y2=0, y3=41] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=11] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=11] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=11, x1=51, x2=1, y1=10, y2=0, y3=41] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=11, x1=51, x2=1, y1=10, y2=0, y3=41] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=11, x1=51, x2=1, y1=11, y2=0, y3=40] [L36] EXPR counter++ VAL [\old(counter)=0, counter=12, counter++=11, x1=51, x2=1, y1=11, y2=0, y3=40] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=12] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=12] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=12, x1=51, x2=1, y1=11, y2=0, y3=40] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=12, x1=51, x2=1, y1=11, y2=0, y3=40] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=12, x1=51, x2=1, y1=12, y2=0, y3=39] [L36] EXPR counter++ VAL [\old(counter)=0, counter=13, counter++=12, x1=51, x2=1, y1=12, y2=0, y3=39] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=13] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=13] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=13, x1=51, x2=1, y1=12, y2=0, y3=39] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=13, x1=51, x2=1, y1=12, y2=0, y3=39] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=13, x1=51, x2=1, y1=13, y2=0, y3=38] [L36] EXPR counter++ VAL [\old(counter)=0, counter=14, counter++=13, x1=51, x2=1, y1=13, y2=0, y3=38] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=14] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=14] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=14, x1=51, x2=1, y1=13, y2=0, y3=38] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=14, x1=51, x2=1, y1=13, y2=0, y3=38] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=14, x1=51, x2=1, y1=14, y2=0, y3=37] [L36] EXPR counter++ VAL [\old(counter)=0, counter=15, counter++=14, x1=51, x2=1, y1=14, y2=0, y3=37] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=15] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=15] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=15, x1=51, x2=1, y1=14, y2=0, y3=37] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=15, x1=51, x2=1, y1=14, y2=0, y3=37] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=15, x1=51, x2=1, y1=15, y2=0, y3=36] [L36] EXPR counter++ VAL [\old(counter)=0, counter=16, counter++=15, x1=51, x2=1, y1=15, y2=0, y3=36] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=16] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=16] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=16, x1=51, x2=1, y1=15, y2=0, y3=36] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=16, x1=51, x2=1, y1=15, y2=0, y3=36] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=16, x1=51, x2=1, y1=16, y2=0, y3=35] [L36] EXPR counter++ VAL [\old(counter)=0, counter=17, counter++=16, x1=51, x2=1, y1=16, y2=0, y3=35] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=17] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=17] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=17, x1=51, x2=1, y1=16, y2=0, y3=35] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=17, x1=51, x2=1, y1=16, y2=0, y3=35] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=17, x1=51, x2=1, y1=17, y2=0, y3=34] [L36] EXPR counter++ VAL [\old(counter)=0, counter=18, counter++=17, x1=51, x2=1, y1=17, y2=0, y3=34] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=18] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=18] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=18, x1=51, x2=1, y1=17, y2=0, y3=34] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=18, x1=51, x2=1, y1=17, y2=0, y3=34] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=18, x1=51, x2=1, y1=18, y2=0, y3=33] [L36] EXPR counter++ VAL [\old(counter)=0, counter=19, counter++=18, x1=51, x2=1, y1=18, y2=0, y3=33] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=19] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=19] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=19, x1=51, x2=1, y1=18, y2=0, y3=33] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=19, x1=51, x2=1, y1=18, y2=0, y3=33] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=19, x1=51, x2=1, y1=19, y2=0, y3=32] [L36] EXPR counter++ VAL [\old(counter)=0, counter=20, counter++=19, x1=51, x2=1, y1=19, y2=0, y3=32] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=20] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=20] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=20, x1=51, x2=1, y1=19, y2=0, y3=32] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=20, x1=51, x2=1, y1=19, y2=0, y3=32] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=20, x1=51, x2=1, y1=20, y2=0, y3=31] [L36] EXPR counter++ VAL [\old(counter)=0, counter=21, counter++=20, x1=51, x2=1, y1=20, y2=0, y3=31] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=21] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=21] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=21, x1=51, x2=1, y1=20, y2=0, y3=31] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=21, x1=51, x2=1, y1=20, y2=0, y3=31] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=21, x1=51, x2=1, y1=21, y2=0, y3=30] [L36] EXPR counter++ VAL [\old(counter)=0, counter=22, counter++=21, x1=51, x2=1, y1=21, y2=0, y3=30] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=22] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=22] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=22, x1=51, x2=1, y1=21, y2=0, y3=30] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=22, x1=51, x2=1, y1=21, y2=0, y3=30] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=22, x1=51, x2=1, y1=22, y2=0, y3=29] [L36] EXPR counter++ VAL [\old(counter)=0, counter=23, counter++=22, x1=51, x2=1, y1=22, y2=0, y3=29] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=23] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=23] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=23, x1=51, x2=1, y1=22, y2=0, y3=29] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=23, x1=51, x2=1, y1=22, y2=0, y3=29] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=23, x1=51, x2=1, y1=23, y2=0, y3=28] [L36] EXPR counter++ VAL [\old(counter)=0, counter=24, counter++=23, x1=51, x2=1, y1=23, y2=0, y3=28] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=24] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=24] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=24, x1=51, x2=1, y1=23, y2=0, y3=28] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=24, x1=51, x2=1, y1=23, y2=0, y3=28] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=24, x1=51, x2=1, y1=24, y2=0, y3=27] [L36] EXPR counter++ VAL [\old(counter)=0, counter=25, counter++=24, x1=51, x2=1, y1=24, y2=0, y3=27] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=25] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=25] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=25, x1=51, x2=1, y1=24, y2=0, y3=27] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=25, x1=51, x2=1, y1=24, y2=0, y3=27] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=25, x1=51, x2=1, y1=25, y2=0, y3=26] [L36] EXPR counter++ VAL [\old(counter)=0, counter=26, counter++=25, x1=51, x2=1, y1=25, y2=0, y3=26] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=26] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=26] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=26, x1=51, x2=1, y1=25, y2=0, y3=26] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=26, x1=51, x2=1, y1=25, y2=0, y3=26] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=26, x1=51, x2=1, y1=26, y2=0, y3=25] [L36] EXPR counter++ VAL [\old(counter)=0, counter=27, counter++=26, x1=51, x2=1, y1=26, y2=0, y3=25] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=27] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=27] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=27, x1=51, x2=1, y1=26, y2=0, y3=25] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=27, x1=51, x2=1, y1=26, y2=0, y3=25] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=27, x1=51, x2=1, y1=27, y2=0, y3=24] [L36] EXPR counter++ VAL [\old(counter)=0, counter=28, counter++=27, x1=51, x2=1, y1=27, y2=0, y3=24] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=28] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=28] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=28, x1=51, x2=1, y1=27, y2=0, y3=24] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=28, x1=51, x2=1, y1=27, y2=0, y3=24] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=28, x1=51, x2=1, y1=28, y2=0, y3=23] [L36] EXPR counter++ VAL [\old(counter)=0, counter=29, counter++=28, x1=51, x2=1, y1=28, y2=0, y3=23] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=29] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=29] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=29, x1=51, x2=1, y1=28, y2=0, y3=23] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=29, x1=51, x2=1, y1=28, y2=0, y3=23] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=29, x1=51, x2=1, y1=29, y2=0, y3=22] [L36] EXPR counter++ VAL [\old(counter)=0, counter=30, counter++=29, x1=51, x2=1, y1=29, y2=0, y3=22] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=30] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=30] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=30, x1=51, x2=1, y1=29, y2=0, y3=22] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=30, x1=51, x2=1, y1=29, y2=0, y3=22] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=30, x1=51, x2=1, y1=30, y2=0, y3=21] [L36] EXPR counter++ VAL [\old(counter)=0, counter=31, counter++=30, x1=51, x2=1, y1=30, y2=0, y3=21] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=31] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=31] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=31, x1=51, x2=1, y1=30, y2=0, y3=21] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=31, x1=51, x2=1, y1=30, y2=0, y3=21] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=31, x1=51, x2=1, y1=31, y2=0, y3=20] [L36] EXPR counter++ VAL [\old(counter)=0, counter=32, counter++=31, x1=51, x2=1, y1=31, y2=0, y3=20] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=32] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=32] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=32, x1=51, x2=1, y1=31, y2=0, y3=20] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=32, x1=51, x2=1, y1=31, y2=0, y3=20] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=32, x1=51, x2=1, y1=32, y2=0, y3=19] [L36] EXPR counter++ VAL [\old(counter)=0, counter=33, counter++=32, x1=51, x2=1, y1=32, y2=0, y3=19] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=33] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=33] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=33, x1=51, x2=1, y1=32, y2=0, y3=19] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=33, x1=51, x2=1, y1=32, y2=0, y3=19] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=33, x1=51, x2=1, y1=33, y2=0, y3=18] [L36] EXPR counter++ VAL [\old(counter)=0, counter=34, counter++=33, x1=51, x2=1, y1=33, y2=0, y3=18] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=34] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=34] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=34, x1=51, x2=1, y1=33, y2=0, y3=18] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=34, x1=51, x2=1, y1=33, y2=0, y3=18] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=34, x1=51, x2=1, y1=34, y2=0, y3=17] [L36] EXPR counter++ VAL [\old(counter)=0, counter=35, counter++=34, x1=51, x2=1, y1=34, y2=0, y3=17] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=35] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=35] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=35, x1=51, x2=1, y1=34, y2=0, y3=17] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=35, x1=51, x2=1, y1=34, y2=0, y3=17] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=35, x1=51, x2=1, y1=35, y2=0, y3=16] [L36] EXPR counter++ VAL [\old(counter)=0, counter=36, counter++=35, x1=51, x2=1, y1=35, y2=0, y3=16] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=36] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=36] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=36, x1=51, x2=1, y1=35, y2=0, y3=16] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=36, x1=51, x2=1, y1=35, y2=0, y3=16] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=36, x1=51, x2=1, y1=36, y2=0, y3=15] [L36] EXPR counter++ VAL [\old(counter)=0, counter=37, counter++=36, x1=51, x2=1, y1=36, y2=0, y3=15] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=37] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=37] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=37, x1=51, x2=1, y1=36, y2=0, y3=15] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=37, x1=51, x2=1, y1=36, y2=0, y3=15] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=37, x1=51, x2=1, y1=37, y2=0, y3=14] [L36] EXPR counter++ VAL [\old(counter)=0, counter=38, counter++=37, x1=51, x2=1, y1=37, y2=0, y3=14] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=38] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=38] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=38, x1=51, x2=1, y1=37, y2=0, y3=14] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=38, x1=51, x2=1, y1=37, y2=0, y3=14] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=38, x1=51, x2=1, y1=38, y2=0, y3=13] [L36] EXPR counter++ VAL [\old(counter)=0, counter=39, counter++=38, x1=51, x2=1, y1=38, y2=0, y3=13] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=39] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=39] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=39, x1=51, x2=1, y1=38, y2=0, y3=13] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=39, x1=51, x2=1, y1=38, y2=0, y3=13] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=39, x1=51, x2=1, y1=39, y2=0, y3=12] [L36] EXPR counter++ VAL [\old(counter)=0, counter=40, counter++=39, x1=51, x2=1, y1=39, y2=0, y3=12] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=40] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=40] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=40, x1=51, x2=1, y1=39, y2=0, y3=12] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=40, x1=51, x2=1, y1=39, y2=0, y3=12] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=40, x1=51, x2=1, y1=40, y2=0, y3=11] [L36] EXPR counter++ VAL [\old(counter)=0, counter=41, counter++=40, x1=51, x2=1, y1=40, y2=0, y3=11] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=41] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=41] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=41, x1=51, x2=1, y1=40, y2=0, y3=11] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=41, x1=51, x2=1, y1=40, y2=0, y3=11] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=41, x1=51, x2=1, y1=41, y2=0, y3=10] [L36] EXPR counter++ VAL [\old(counter)=0, counter=42, counter++=41, x1=51, x2=1, y1=41, y2=0, y3=10] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=42] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=42] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=42, x1=51, x2=1, y1=41, y2=0, y3=10] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=42, x1=51, x2=1, y1=41, y2=0, y3=10] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=42, x1=51, x2=1, y1=42, y2=0, y3=9] [L36] EXPR counter++ VAL [\old(counter)=0, counter=43, counter++=42, x1=51, x2=1, y1=42, y2=0, y3=9] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=43] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=43] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=43, x1=51, x2=1, y1=42, y2=0, y3=9] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=43, x1=51, x2=1, y1=42, y2=0, y3=9] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=43, x1=51, x2=1, y1=43, y2=0, y3=8] [L36] EXPR counter++ VAL [\old(counter)=0, counter=44, counter++=43, x1=51, x2=1, y1=43, y2=0, y3=8] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=44] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=44] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=44, x1=51, x2=1, y1=43, y2=0, y3=8] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=44, x1=51, x2=1, y1=43, y2=0, y3=8] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=44, x1=51, x2=1, y1=44, y2=0, y3=7] [L36] EXPR counter++ VAL [\old(counter)=0, counter=45, counter++=44, x1=51, x2=1, y1=44, y2=0, y3=7] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=45] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=45] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=45, x1=51, x2=1, y1=44, y2=0, y3=7] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=45, x1=51, x2=1, y1=44, y2=0, y3=7] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=45, x1=51, x2=1, y1=45, y2=0, y3=6] [L36] EXPR counter++ VAL [\old(counter)=0, counter=46, counter++=45, x1=51, x2=1, y1=45, y2=0, y3=6] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=46] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=46] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=46, x1=51, x2=1, y1=45, y2=0, y3=6] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=46, x1=51, x2=1, y1=45, y2=0, y3=6] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=46, x1=51, x2=1, y1=46, y2=0, y3=5] [L36] EXPR counter++ VAL [\old(counter)=0, counter=47, counter++=46, x1=51, x2=1, y1=46, y2=0, y3=5] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=47] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=47] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=47, x1=51, x2=1, y1=46, y2=0, y3=5] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=47, x1=51, x2=1, y1=46, y2=0, y3=5] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=47, x1=51, x2=1, y1=47, y2=0, y3=4] [L36] EXPR counter++ VAL [\old(counter)=0, counter=48, counter++=47, x1=51, x2=1, y1=47, y2=0, y3=4] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=48] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=48] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=48, x1=51, x2=1, y1=47, y2=0, y3=4] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=48, x1=51, x2=1, y1=47, y2=0, y3=4] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=48, x1=51, x2=1, y1=48, y2=0, y3=3] [L36] EXPR counter++ VAL [\old(counter)=0, counter=49, counter++=48, x1=51, x2=1, y1=48, y2=0, y3=3] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=49] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=49] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=49, x1=51, x2=1, y1=48, y2=0, y3=3] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=49, x1=51, x2=1, y1=48, y2=0, y3=3] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=49, x1=51, x2=1, y1=49, y2=0, y3=2] [L36] EXPR counter++ VAL [\old(counter)=0, counter=50, counter++=49, x1=51, x2=1, y1=49, y2=0, y3=2] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, \old(counter)=0, counter=50] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=50] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(counter)=0, counter=50, x1=51, x2=1, y1=49, y2=0, y3=2] [L39] COND FALSE !(!(y3 != 0)) VAL [\old(counter)=0, counter=50, x1=51, x2=1, y1=49, y2=0, y3=2] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [\old(counter)=0, counter=50, x1=51, x2=1, y1=50, y2=0, y3=1] [L36] EXPR counter++ VAL [\old(counter)=0, counter=51, counter++=50, x1=51, x2=1, y1=50, y2=0, y3=1] [L36] COND FALSE !(counter++<50) [L50] CALL __VERIFIER_assert(y1*x2 + y2 == x1) VAL [\old(cond)=0, \old(counter)=0, counter=51] [L16] COND TRUE !(cond) VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=51] [L18] reach_error() VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=51] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 86965.7ms, OverallIterations: 54, TraceHistogramMax: 51, EmptinessCheckTime: 97.2ms, AutomataDifference: 29580.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2597 SDtfs, 4901 SDslu, 11382 SDs, 0 SdLazy, 7633 SolverSat, 1111 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6189.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13415 GetRequests, 10847 SyntacticMatches, 0 SemanticMatches, 2568 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20835 ImplicationChecksByTransitivity, 37387.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=470occurred in iteration=53, InterpolantAutomatonStates: 2669, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 572.6ms AutomataMinimizationTime, 53 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1143.6ms SsaConstructionTime, 5507.3ms SatisfiabilityAnalysisTime, 35556.6ms InterpolantComputationTime, 12722 NumberOfCodeBlocks, 12722 NumberOfCodeBlocksAsserted, 687 NumberOfCheckSat, 12196 ConstructedInterpolants, 0 QuantifiedInterpolants, 36058 SizeOfPredicates, 1280 NumberOfNonLiveVariables, 34790 ConjunctsInSsa, 2724 ConjunctsInUnsatCore, 53 InterpolantComputations, 3 PerfectInterpolantSequences, 2663/181514 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...